[PATCH] D128697: [clang-tidy] Add new check `bugprone-unhandled-exception-at-sto`

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added a reviewer: aaron.ballman.
Herald added subscribers: carlosgalvezp, xazax.hun, mgorny.
Herald added a project: All.
Sockke requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.

Calls to **stoi** and **stod** families of functions may throw exceptions so 
they need to be surrounded by try/catch.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D128697

Files:
  clang-tools-extra/clang-tidy/bugprone/BugproneTidyModule.cpp
  clang-tools-extra/clang-tidy/bugprone/CMakeLists.txt
  clang-tools-extra/clang-tidy/bugprone/UnhandledExceptionAtStoCheck.cpp
  clang-tools-extra/clang-tidy/bugprone/UnhandledExceptionAtStoCheck.h
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/docs/clang-tidy/checks/bugprone/unhandled-exception-at-sto.rst
  clang-tools-extra/docs/clang-tidy/checks/list.rst
  
clang-tools-extra/test/clang-tidy/checkers/bugprone/unhandled-exception-at-sto.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/bugprone/unhandled-exception-at-sto.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/checkers/bugprone/unhandled-exception-at-sto.cpp
@@ -0,0 +1,128 @@
+// RUN: %check_clang_tidy %s bugprone-unhandled-exception-at-sto %t
+
+namespace std {
+
+template 
+struct basic_string {
+  basic_string(const Char *);
+  ~basic_string();
+};
+typedef basic_string string;
+
+typedef unsigned int size_t;
+
+int stoi(const std::string &str, size_t *pos = nullptr, int base = 10) { return 0; }
+long stol(const std::string &str, size_t *pos = nullptr, int base = 10) { return 0; }
+long long stoll(const std::string &str, size_t *pos = nullptr, int base = 10) { return 0; }
+
+float stof(const std::string &str, size_t *pos = nullptr) { return 0; }
+double stod(const std::string &str, size_t *pos = nullptr) { return 0; }
+long double stold(const std::string &str, size_t *pos = nullptr) { return 0; }
+
+struct exception {};
+struct logic_error : public exception {};
+struct invalid_argument : public logic_error {};
+struct out_of_range : public logic_error {};
+
+} // namespace std
+
+void test() {
+  std::string s("123");
+
+  int a = std::stoi(s);
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: missing exception handler for invalid argument and out of range at 'std::stoi' [bugprone-unhandled-exception-at-sto]
+  long b = std::stol(s);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: missing exception handler for invalid argument and out of range at 'std::stol' [bugprone-unhandled-exception-at-sto]
+  long long c = std::stoll(s);
+  // CHECK-MESSAGES: :[[@LINE-1]]:17: warning: missing exception handler for invalid argument and out of range at 'std::stoll' [bugprone-unhandled-exception-at-sto]
+  float d = std::stof(s);
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: missing exception handler for invalid argument and out of range at 'std::stof' [bugprone-unhandled-exception-at-sto]
+  double e = std::stod(s);
+  // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: missing exception handler for invalid argument and out of range at 'std::stod' [bugprone-unhandled-exception-at-sto]
+  long double f = std::stold(s);
+  // CHECK-MESSAGES: :[[@LINE-1]]:19: warning: missing exception handler for invalid argument and out of range at 'std::stold' [bugprone-unhandled-exception-at-sto]
+
+  try {
+int v = std::stoi(s);
+// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: missing exception handler for invalid argument at 'std::stoi' [bugprone-unhandled-exception-at-sto]
+  } catch (std::out_of_range) {
+  }
+  try {
+int v = std::stoi(s);
+// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: missing exception handler for invalid argument at 'std::stoi' [bugprone-unhandled-exception-at-sto]
+  } catch (std::out_of_range &) {
+  }
+  try {
+int v = std::stoi(s);
+// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: missing exception handler for invalid argument at 'std::stoi' [bugprone-unhandled-exception-at-sto]
+  } catch (const std::out_of_range &) {
+  }
+  try {
+int v = std::stoi(s);
+// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: missing exception handler for invalid argument and out of range at 'std::stoi' [bugprone-unhandled-exception-at-sto]
+  } catch (std::out_of_range *) {
+  }
+
+  try {
+int v = std::stoi(s);
+// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: missing exception handler for out of range at 'std::stoi' [bugprone-unhandled-exception-at-sto]
+  } catch (std::invalid_argument) {
+  }
+  try {
+int v = std::stoi(s);
+// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: missing exception handler for out of range at 'std::stoi' [bugprone-unhandled-exception-at-sto]
+  } catch (std::invalid_argument &) {
+  }
+  try {
+int v = std::stoi(s);
+// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: missing exception handler for out of range at 'std::stoi' [bugprone-unhandled-exception-at-sto]
+  } catch (const

[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 440517.
Sockke added a comment.

rebased.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D127293/new/

https://reviews.llvm.org/D127293

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
@@ -552,3 +552,19 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), 
FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,18 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion())
+  AnyMemberHasInitPerUnion = true;
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +453,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +494,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = false;
   forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
  AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
@@ -552,3 +552,19 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all memb

[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 441241.
Sockke added a comment.

Added release notes.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D127293/new/

https://reviews.llvm.org/D127293

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
@@ -552,3 +552,19 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -183,6 +183,10 @@
   Fixed an issue when there was already an initializer in the constructor and
   the check would try to create another initializer for the same member.
 
+- Fixed a false positive in :doc:`cppcoreguidelines-pro-type-member-init
+  ` when any member
+  of the anonymous union has been initialized.
+
 - Fixed a false positive in :doc:`cppcoreguidelines-virtual-class-destructor
   ` involving
   ``final`` classes. The check will not diagnose classes marked ``final``, since
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,18 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion())
+  AnyMemberHasInitPerUnion = true;
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +453,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +494,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = false;
   forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
  AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))
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[PATCH] D128697: [clang-tidy] Add new check `bugprone-unhandled-exception-at-sto`

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

In D128697#3615404 , @Eugene.Zelenko 
wrote:

> I think will be good idea to make check more generic and allow user-defined 
> list of unsafe functions.

I understand that user-defined is implemented through the config, but some 
types of information of user customization cannot be well described here. Maybe 
use function name and argument counts only to match unsafe functions?


Repository:
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[PATCH] D128697: [clang-tidy] Add new check `bugprone-unhandled-exception-at-sto`

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

In D128697#3619310 , 
@LegalizeAdulthood wrote:

> This whole check seems weird to me.  I mean, almost every use of a standard 
> container could throw `std::bad_alloc` but we don't insist on a local `catch` 
> for `bad_alloc` at every possible throwing call site.
>
> Why would we assume that every call site of `stoi` or `stod` **must** have an 
> exception handler immediately around it?  It's perfectly acceptable for an 
> application to handle this at an outer scope that can't be detected by 
> clang-tidy.

Makes sense, I implemented this check here because some projects in ByteDance 
used stoi with missing exception handlers caused an online crash, I think this 
is a relatively common problem.  Perhaps only report diagnostics for stoi calls 
in nothrow functions?


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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


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[PATCH] D128697: [clang-tidy] Add new check `bugprone-unhandled-exception-at-sto`

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 449188.
Sockke added a comment.

Rebased.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D127293/new/

https://reviews.llvm.org/D127293

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
@@ -552,3 +552,30 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
+
+struct S3 {
+  S3() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: constructor does not initialize these fields: A [cppcoreguidelines-pro-type-member-init]
+  int A;
+  // CHECK-FIXES: int A{};
+  union {
+int B;
+int C = 0;
+  };
+};
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -105,6 +105,11 @@
 Changes in existing checks
 ^^
 
+- Fixed a false positive in :doc:`cppcoreguidelines-pro-type-member-init
+  ` when warnings
+  would be emitted for uninitialized members of an anonymous union despite
+  there being an initializer for one of the other members.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,20 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion()) {
+  AnyMemberHasInitPerUnion = true;
+  removeFieldInitialized(F, FieldsToInit);
+}
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +455,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +496,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = false;
   forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
  AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))
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[PATCH] D105973: [ASTMatchers] NFC: Fix the annotation.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 358820.
Sockke edited the summary of this revision.
Sockke added a comment.

Thanks for your review! I have run clang/docs/tools/dump_ast_matchers.py to 
regenerate the documentation.


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Files:
  clang/docs/LibASTMatchersReference.html
  clang/include/clang/ASTMatchers/ASTMatchers.h


Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -913,7 +913,7 @@
 ///varDecl(hasInitializer(integerLiteral()))
 ///varDecl(hasInitializer(declRefExpr()))
 /// \endcode
-/// only match the declarations for b, c, and d.
+/// only match the declarations for a.
 AST_MATCHER_P(Expr, ignoringImpCasts,
   internal::Matcher, InnerMatcher) {
   return InnerMatcher.matches(*Node.IgnoreImpCasts(), Finder, Builder);
Index: clang/docs/LibASTMatchersReference.html
===
--- clang/docs/LibASTMatchersReference.html
+++ clang/docs/LibASTMatchersReference.html
@@ -7701,7 +7721,7 @@
 While
varDecl(hasInitializer(integerLiteral()))
varDecl(hasInitializer(declRefExpr()))
-only match the declarations for b, c, and d.
+only match the declarations for a.
 
 
 


Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -913,7 +913,7 @@
 ///varDecl(hasInitializer(integerLiteral()))
 ///varDecl(hasInitializer(declRefExpr()))
 /// \endcode
-/// only match the declarations for b, c, and d.
+/// only match the declarations for a.
 AST_MATCHER_P(Expr, ignoringImpCasts,
   internal::Matcher, InnerMatcher) {
   return InnerMatcher.matches(*Node.IgnoreImpCasts(), Finder, Builder);
Index: clang/docs/LibASTMatchersReference.html
===
--- clang/docs/LibASTMatchersReference.html
+++ clang/docs/LibASTMatchersReference.html
@@ -7701,7 +7721,7 @@
 While
varDecl(hasInitializer(integerLiteral()))
varDecl(hasInitializer(declRefExpr()))
-only match the declarations for b, c, and d.
+only match the declarations for a.
 
 
 
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[PATCH] D105973: [ASTMatchers] NFC: Fix the annotation.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 358835.
Sockke added a comment.

update to display context.


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  clang/include/clang/ASTMatchers/ASTMatchers.h


Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -913,7 +913,7 @@
 ///varDecl(hasInitializer(integerLiteral()))
 ///varDecl(hasInitializer(declRefExpr()))
 /// \endcode
-/// only match the declarations for b, c, and d.
+/// only match the declarations for a.
 AST_MATCHER_P(Expr, ignoringImpCasts,
   internal::Matcher, InnerMatcher) {
   return InnerMatcher.matches(*Node.IgnoreImpCasts(), Finder, Builder);
Index: clang/docs/LibASTMatchersReference.html
===
--- clang/docs/LibASTMatchersReference.html
+++ clang/docs/LibASTMatchersReference.html
@@ -7701,7 +7701,7 @@
 While
varDecl(hasInitializer(integerLiteral()))
varDecl(hasInitializer(declRefExpr()))
-only match the declarations for b, c, and d.
+only match the declarations for a.
 
 
 


Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -913,7 +913,7 @@
 ///varDecl(hasInitializer(integerLiteral()))
 ///varDecl(hasInitializer(declRefExpr()))
 /// \endcode
-/// only match the declarations for b, c, and d.
+/// only match the declarations for a.
 AST_MATCHER_P(Expr, ignoringImpCasts,
   internal::Matcher, InnerMatcher) {
   return InnerMatcher.matches(*Node.IgnoreImpCasts(), Finder, Builder);
Index: clang/docs/LibASTMatchersReference.html
===
--- clang/docs/LibASTMatchersReference.html
+++ clang/docs/LibASTMatchersReference.html
@@ -7701,7 +7701,7 @@
 While
varDecl(hasInitializer(integerLiteral()))
varDecl(hasInitializer(declRefExpr()))
-only match the declarations for b, c, and d.
+only match the declarations for a.
 
 
 
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[PATCH] D105973: [ASTMatchers] NFC: Fix the annotation.

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

I would appreciate it if you could submit it on my behalf. Thanks a lot!

Name: liuke
Email: liuke.ge...@bytedance.com


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[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables with enum judgement

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added reviewers: aaron.ballman, MTC, steven.zhang.
Herald added subscribers: shchenz, kbarton, xazax.hun, nemanjai.
Sockke requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.

In C++, the enumeration is never Integer, and the enumeration condition 
judgment is added to avoid compiling errors when it is initialized to an 
integer.


Repository:
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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -91,3 +91,18 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+void enum_should_not_be_initialized() {
+  // Expect no warning given here.
+  Color color;
+  // Expect no warning given here.
+  Car car;
+  // Expect no warning given here.
+  Gender gender;
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -83,7 +83,9 @@
   const char *InitializationString = nullptr;
   bool AddMathInclude = false;
 
-  if (TypePtr->isIntegerType())
+  if (TypePtr->isEnumeralType())
+return;
+  else if (TypePtr->isIntegerType())
 InitializationString = " = 0";
   else if (TypePtr->isFloatingType()) {
 InitializationString = " = NAN";


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -91,3 +91,18 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+void enum_should_not_be_initialized() {
+  // Expect no warning given here.
+  Color color;
+  // Expect no warning given here.
+  Car car;
+  // Expect no warning given here.
+  Gender gender;
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -83,7 +83,9 @@
   const char *InitializationString = nullptr;
   bool AddMathInclude = false;
 
-  if (TypePtr->isIntegerType())
+  if (TypePtr->isEnumeralType())
+return;
+  else if (TypePtr->isIntegerType())
 InitializationString = " = 0";
   else if (TypePtr->isFloatingType()) {
 InitializationString = " = NAN";
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[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables with enum judgement

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

At present, Our views on preventing UB are basically the same, so a warning 
still needs to be reported (BTW, the original version will not report warnings 
for enum class types). The final question is what is the recommended value for 
initialization and whether to provide the automatic fix.  Hope you can give us 
a direction, thanks！@aaron.ballman


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[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables with enum judgement

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

In D106431#2896472 , @whisperity 
wrote:

> In D106431#2896441 , @aaron.ballman 
> wrote:
>
>> However, I don't recall how clang-tidy interacts with fix-its on notes off 
>> the top of my head, so I'm making an assumption that clang-tidy's automatic 
>> fixit applying mode handles notes the same way as clang and we should 
>> double-check that assumption.
>
> I have one information from January that if you're viewing the diagnostic 
> output as a sequence of `[warning, note, note, ...]` elements (so you "group 
> by" warning), Clang-Tidy will apply the //first// fix (be it on the warning 
> or the note) in the order of `diag()` calls. (There was a (never-upstreamed) 
> check in which I had to abuse this fact.) This behaviour could've changed, 
> though...
>
> In D106431#2896441 , @aaron.ballman 
> wrote:
>
>> Another way forward would be to not issue a fix-it for integers or 
>> enumerations.
>
> This might be the best course of action, and could be fixed in the same patch 
> (this one)...

I may be more supportive of the first view. Based on clang -Wuninitialized, we 
hope that clang-tidy can do more. In addition, if there are two recommended 
values for enum initialization, we can put them in one note.


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[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables with enum judgement

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Any thoughts?  : )


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[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables by removing the enum FixIt, and add support for initialization check of scoped enum.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 362291.
Sockke retitled this revision from "[clang-tidy] Fix 
cppcoreguidelines-init-variables with enum judgement" to "[clang-tidy] Fix 
cppcoreguidelines-init-variables by removing the enum FixIt, and add support 
for initialization check of scoped enum.".
Sockke edited the summary of this revision.
Sockke added a comment.

Update!


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -92,3 +92,26 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+enum class Direction { Up, Down, Left, Right };
+
+enum class Fruit : int { Apple, Orange };
+
+void uninitialized_enum() {
+  Color color;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not 
initialized [cppcoreguidelines-init-variables]
+  Car car;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'car' is not 
initialized [cppcoreguidelines-init-variables]
+  Gender gender;
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'gender' is not 
initialized [cppcoreguidelines-init-variables]
+  Direction direction;
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: variable 'direction' is not 
initialized [cppcoreguidelines-init-variables]
+  Fruit fruit;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not 
initialized [cppcoreguidelines-init-variables]
+}
Index: 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
===
--- 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
+++ 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
@@ -37,6 +37,21 @@
  // Rest of the function.
}
 
+It warns for the uninitialized enum case, but without a FixIt:
+
+.. code-block:: c++
+
+   enum A {A1, A2, A3};
+   enum A_c : char { A_c1, A_c2, A_c3 };
+   enum class B { B1, B2, B3 };
+   enum class B_i : int { B_i1, B_i2, B_i3 };
+   void function() {
+ A a; // Warning: variable 'a' is not initialized
+ A_c a_c; // Warning: variable 'a_c' is not initialized
+ B b; // Warning: variable 'b' is not initialized
+ B_i b_i; // Warning: variable 'b_i' is not initialized
+   }
+
 Options
 ---
 
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -149,6 +149,12 @@
   function or assignment to ``nullptr``.
   Added support for pointers to ``std::unique_ptr``.
 
+- Improved 
:doc:`cppcoreguidelines-init-variables`
 check.
+
+  Removed the FixIt related to enum in this check because the rule it checks 
will initialize the enum as an integer and cause an error.
+
+  ⁣Added support for initialization check of the scoped enum
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -81,6 +81,11 @@
   const char *InitializationString = nullptr;
   bool AddMathInclude = false;
 
+  if (TypePtr->isEnumeralType()) {
+diag(MatchedDecl->getLocation(), "variable %0 is not initialized")
+<< MatchedDecl;
+return;
+  }
   if (TypePtr->isIntegerType())
 InitializationString = " = 0";
   else if (TypePtr->isFloatingType()) {


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -92,3 +92,26 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+enum class Direction { Up, Down, Left, Right };
+
+enum class Fruit : int { Apple, Orange };
+
+void uninitialized_enum() {
+  Color color;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not initialized [cppcoreguidelines-

[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables by removing the enum FixIt, and add support for initialization check of scoped enum.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 362320.
Sockke added a comment.

Update!


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -92,3 +92,26 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+enum class Direction { Up, Down, Left, Right };
+
+enum class Fruit : int { Apple, Orange };
+
+void uninitialized_enum() {
+  Color color;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not 
initialized [cppcoreguidelines-init-variables]
+  Car car;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'car' is not 
initialized [cppcoreguidelines-init-variables]
+  Gender gender;
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'gender' is not 
initialized [cppcoreguidelines-init-variables]
+  Direction direction;
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: variable 'direction' is not 
initialized [cppcoreguidelines-init-variables]
+  Fruit fruit;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not 
initialized [cppcoreguidelines-init-variables]
+}
Index: 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
===
--- 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
+++ 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
@@ -37,6 +37,21 @@
  // Rest of the function.
}
 
+It warns for the uninitialized enum case, but without a FixIt:
+
+.. code-block:: c++
+
+   enum A {A1, A2, A3};
+   enum A_c : char { A_c1, A_c2, A_c3 };
+   enum class B { B1, B2, B3 };
+   enum class B_i : int { B_i1, B_i2, B_i3 };
+   void function() {
+ A a; // Warning: variable 'a' is not initialized
+ A_c a_c; // Warning: variable 'a_c' is not initialized
+ B b; // Warning: variable 'b' is not initialized
+ B_i b_i; // Warning: variable 'b_i' is not initialized
+   }
+
 Options
 ---
 
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -149,6 +149,12 @@
   function or assignment to ``nullptr``.
   Added support for pointers to ``std::unique_ptr``.
 
+- Improved 
:doc:`cppcoreguidelines-init-variables`
 check.
+
+  Removed the FixIt related to enum in this check because the rule it checks 
will initialize the enum as an integer and cause an error.
+
+  Added support for initialization check of the scoped enum.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -81,6 +81,11 @@
   const char *InitializationString = nullptr;
   bool AddMathInclude = false;
 
+  if (TypePtr->isEnumeralType()) {
+diag(MatchedDecl->getLocation(), "variable %0 is not initialized")
+<< MatchedDecl;
+return;
+  }
   if (TypePtr->isIntegerType())
 InitializationString = " = 0";
   else if (TypePtr->isFloatingType()) {


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -92,3 +92,26 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+enum class Direction { Up, Down, Left, Right };
+
+enum class Fruit : int { Apple, Orange };
+
+void uninitialized_enum() {
+  Color color;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not initialized [cppcoreguidelines-init-variables]
+  Car car;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'car' is not initialized [cppcoreguidelines-init-variables]
+  Gender gender;
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'gender' is not initialized [cppcoreguidelines-init-variables]
+  Direction 

[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables by removing the enum FixIt, and add support for initialization check of scoped enum.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 362345.
Sockke added a comment.

Thanks for your reply @whisperity.  I have updated!


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -92,3 +92,26 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+enum class Direction { Up, Down, Left, Right };
+
+enum class Fruit : int { Apple, Orange };
+
+void uninitialized_enum() {
+  Color color;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not 
initialized [cppcoreguidelines-init-variables]
+  Car car;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'car' is not 
initialized [cppcoreguidelines-init-variables]
+  Gender gender;
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'gender' is not 
initialized [cppcoreguidelines-init-variables]
+  Direction direction;
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: variable 'direction' is not 
initialized [cppcoreguidelines-init-variables]
+  Fruit fruit;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not 
initialized [cppcoreguidelines-init-variables]
+}
Index: 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
===
--- 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
+++ 
clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
@@ -37,6 +37,21 @@
  // Rest of the function.
}
 
+It warns for the uninitialized enum case, but without a FixIt:
+
+.. code-block:: c++
+
+   enum A {A1, A2, A3};
+   enum A_c : char { A_c1, A_c2, A_c3 };
+   enum class B { B1, B2, B3 };
+   enum class B_i : int { B_i1, B_i2, B_i3 };
+   void function() {
+ A a; // Warning: variable 'a' is not initialized
+ A_c a_c; // Warning: variable 'a_c' is not initialized
+ B b; // Warning: variable 'b' is not initialized
+ B_i b_i; // Warning: variable 'b_i' is not initialized
+   }
+
 Options
 ---
 
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -149,6 +149,12 @@
   function or assignment to ``nullptr``.
   Added support for pointers to ``std::unique_ptr``.
 
+- Improved 
:doc:`cppcoreguidelines-init-variables`
 check.
+
+  Removed generating fixes for enums because the code generated was broken, 
trying to initialize the enum from an integer.
+
+  The check now also warns for uninitialized scoped enums.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -81,6 +81,11 @@
   const char *InitializationString = nullptr;
   bool AddMathInclude = false;
 
+  if (TypePtr->isEnumeralType()) {
+diag(MatchedDecl->getLocation(), "variable %0 is not initialized")
+<< MatchedDecl;
+return;
+  }
   if (TypePtr->isIntegerType())
 InitializationString = " = 0";
   else if (TypePtr->isFloatingType()) {


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -92,3 +92,26 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+enum class Direction { Up, Down, Left, Right };
+
+enum class Fruit : int { Apple, Orange };
+
+void uninitialized_enum() {
+  Color color;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not initialized [cppcoreguidelines-init-variables]
+  Car car;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'car' is not initialized [cppcoreguidelines-init-variables]
+  Gender gender;
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'gender' is not initialized [cppcoreguidelines-

[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables by removing the enum FixIt, and add support for initialization check of scoped enum.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 362651.
Sockke marked 2 inline comments as done.
Sockke added a comment.

Thank you for your reply! I generally understand what you mean, but there are 
three cases, namely, no diagnosis, providing diagnosis, and providing diagnosis 
& FixIt.  Only by judging whether "diagnosis" is null may fail to achieve the 
goal.  I have revised it a little bit, do you think that's alright? 
@aaron.ballman


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D106431/new/

https://reviews.llvm.org/D106431

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -92,3 +92,26 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+enum class Direction { Up, Down, Left, Right };
+
+enum class Fruit : int { Apple, Orange };
+
+void uninitialized_enum() {
+  Color color;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not initialized [cppcoreguidelines-init-variables]
+  Car car;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'car' is not initialized [cppcoreguidelines-init-variables]
+  Gender gender;
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'gender' is not initialized [cppcoreguidelines-init-variables]
+  Direction direction;
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: variable 'direction' is not initialized [cppcoreguidelines-init-variables]
+  Fruit fruit;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not initialized [cppcoreguidelines-init-variables]
+}
Index: clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
===
--- clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
+++ clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
@@ -37,6 +37,21 @@
  // Rest of the function.
}
 
+It warns for the uninitialized enum case, but without a FixIt:
+
+.. code-block:: c++
+
+   enum A {A1, A2, A3};
+   enum A_c : char { A_c1, A_c2, A_c3 };
+   enum class B { B1, B2, B3 };
+   enum class B_i : int { B_i1, B_i2, B_i3 };
+   void function() {
+ A a; // Warning: variable 'a' is not initialized
+ A_c a_c; // Warning: variable 'a_c' is not initialized
+ B b; // Warning: variable 'b' is not initialized
+ B_i b_i; // Warning: variable 'b_i' is not initialized
+   }
+
 Options
 ---
 
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -149,6 +149,12 @@
   function or assignment to ``nullptr``.
   Added support for pointers to ``std::unique_ptr``.
 
+- Improved :doc:`cppcoreguidelines-init-variables` check.
+
+  Removed generating fixes for enums because the code generated was broken, trying to initialize the enum from an integer.
+
+  The check now also warns for uninitialized scoped enums.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -78,10 +78,12 @@
 return;
 
   QualType TypePtr = MatchedDecl->getType();
-  const char *InitializationString = nullptr;
+  llvm::Optional InitializationString = llvm::None;
   bool AddMathInclude = false;
 
-  if (TypePtr->isIntegerType())
+  if (TypePtr->isEnumeralType())
+InitializationString = "";
+  else if (TypePtr->isIntegerType())
 InitializationString = " = 0";
   else if (TypePtr->isFloatingType()) {
 InitializationString = " = NAN";
@@ -96,11 +98,12 @@
   if (InitializationString) {
 auto Diagnostic =
 diag(MatchedDecl->getLocation(), "variable %0 is not initialized")
-<< MatchedDecl
-<< FixItHint::CreateInsertion(
-   MatchedDecl->getLocation().getLocWithOffset(
-   MatchedDecl->getName().size()),
-   InitializationString);
+<< MatchedDecl;
+if (strlen(*InitializationString) != 0)
+  Diagnostic << FixItHint::CreateInsertion(
+  MatchedDecl->getLocation().getLocWithOffset(
+  MatchedDecl->getName().size()),
+  *Initi

[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables by removing the enum FixIt, and add support for initialization check of scoped enum.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 362663.
Sockke added a comment.

You made it very clear, thanks a lot！ @whisperity


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D106431/new/

https://reviews.llvm.org/D106431

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-init-variables.cpp
@@ -92,3 +92,26 @@
   } catch (int X) {
   }
 }
+
+enum Color { Red, Green, Blue };
+
+enum Car { Benz, BMW = 20, Audi = BMW + 2 };
+
+enum Gender : char { Male, Female };
+
+enum class Direction { Up, Down, Left, Right };
+
+enum class Fruit : int { Apple, Orange };
+
+void uninitialized_enum() {
+  Color color;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not initialized [cppcoreguidelines-init-variables]
+  Car car;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'car' is not initialized [cppcoreguidelines-init-variables]
+  Gender gender;
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'gender' is not initialized [cppcoreguidelines-init-variables]
+  Direction direction;
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: variable 'direction' is not initialized [cppcoreguidelines-init-variables]
+  Fruit fruit;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not initialized [cppcoreguidelines-init-variables]
+}
Index: clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
===
--- clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
+++ clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines-init-variables.rst
@@ -37,6 +37,21 @@
  // Rest of the function.
}
 
+It warns for the uninitialized enum case, but without a FixIt:
+
+.. code-block:: c++
+
+   enum A {A1, A2, A3};
+   enum A_c : char { A_c1, A_c2, A_c3 };
+   enum class B { B1, B2, B3 };
+   enum class B_i : int { B_i1, B_i2, B_i3 };
+   void function() {
+ A a; // Warning: variable 'a' is not initialized
+ A_c a_c; // Warning: variable 'a_c' is not initialized
+ B b; // Warning: variable 'b' is not initialized
+ B_i b_i; // Warning: variable 'b_i' is not initialized
+   }
+
 Options
 ---
 
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -149,6 +149,12 @@
   function or assignment to ``nullptr``.
   Added support for pointers to ``std::unique_ptr``.
 
+- Improved :doc:`cppcoreguidelines-init-variables` check.
+
+  Removed generating fixes for enums because the code generated was broken, trying to initialize the enum from an integer.
+
+  The check now also warns for uninitialized scoped enums.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -78,10 +78,12 @@
 return;
 
   QualType TypePtr = MatchedDecl->getType();
-  const char *InitializationString = nullptr;
+  llvm::Optional InitializationString = llvm::None;
   bool AddMathInclude = false;
 
-  if (TypePtr->isIntegerType())
+  if (TypePtr->isEnumeralType())
+InitializationString = nullptr;
+  else if (TypePtr->isIntegerType())
 InitializationString = " = 0";
   else if (TypePtr->isFloatingType()) {
 InitializationString = " = NAN";
@@ -96,11 +98,12 @@
   if (InitializationString) {
 auto Diagnostic =
 diag(MatchedDecl->getLocation(), "variable %0 is not initialized")
-<< MatchedDecl
-<< FixItHint::CreateInsertion(
-   MatchedDecl->getLocation().getLocWithOffset(
-   MatchedDecl->getName().size()),
-   InitializationString);
+<< MatchedDecl;
+if (*InitializationString != nullptr)
+  Diagnostic << FixItHint::CreateInsertion(
+  MatchedDecl->getLocation().getLocWithOffset(
+  MatchedDecl->getName().size()),
+  *InitializationString);
 if (AddMathInclude) {
   Diagnostic << IncludeInserter.createIncludeInsertion(
   Source.getFileID(MatchedDecl->getBeginLoc()), MathHeader);
___
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mail

[PATCH] D123924: [clang-apply-replacements] Added support for adjusting conflict offset.

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added reviewers: malcolm.parsons, hokein, alexfh.
Herald added a project: All.
Sockke requested review of this revision.
Herald added projects: clang, clang-tools-extra.
Herald added a subscriber: cfe-commits.

If two different texts are inserted at the same offset, 
clang-apply-replacements prints the conflict error and discard all fixes. This 
patch adds support for adjusting conflict offset and running to fix them 
continually.

https://godbolt.org/z/P938EGoxj doesn't have any fixes when I run 
run-clang-tidy.py to generate a YAML file with clang-tidy and fix them with 
clang-apply-replacements. The YAML file has two different header texts 
insertions at the same offset, unlike clang-tidy with '-fix', 
clang-apply-replacements does not adjust for this conflict.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D123924

Files:
  clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
  
clang-tools-extra/test/clang-apply-replacements/Inputs/conflict-offset/conflict-offset.cpp
  
clang-tools-extra/test/clang-apply-replacements/Inputs/conflict-offset/file1.yaml
  clang-tools-extra/test/clang-apply-replacements/conflict-offset.cpp
  clang/include/clang/Tooling/Refactoring/AtomicChange.h


Index: clang/include/clang/Tooling/Refactoring/AtomicChange.h
===
--- clang/include/clang/Tooling/Refactoring/AtomicChange.h
+++ clang/include/clang/Tooling/Refactoring/AtomicChange.h
@@ -116,6 +116,8 @@
   /// Returns a const reference to existing replacements.
   const Replacements &getReplacements() const { return Replaces; }
 
+  Replacements &getRefReplacements() { return Replaces; }
+
   llvm::ArrayRef getInsertedHeaders() const {
 return InsertedHeaders;
   }
Index: clang-tools-extra/test/clang-apply-replacements/conflict-offset.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/conflict-offset.cpp
@@ -0,0 +1,5 @@
+// RUN: mkdir -p %T/Inputs/conflict-offset
+// RUN: grep -Ev "// *[A-Z-]+:" %S/Inputs/conflict-offset/conflict-offset.cpp 
> %T/Inputs/conflict-offset/conflict-offset.cpp
+// RUN: sed "s#\$(path)#%/T/Inputs/conflict-offset#" 
%S/Inputs/conflict-offset/file1.yaml > %T/Inputs/conflict-offset/file1.yaml
+// RUN: clang-apply-replacements %T/Inputs/conflict-offset
+// RUN: FileCheck -input-file=%T/Inputs/conflict-offset/conflict-offset.cpp 
%S/Inputs/conflict-offset/conflict-offset.cpp
Index: 
clang-tools-extra/test/clang-apply-replacements/Inputs/conflict-offset/file1.yaml
===
--- /dev/null
+++ 
clang-tools-extra/test/clang-apply-replacements/Inputs/conflict-offset/file1.yaml
@@ -0,0 +1,24 @@
+---
+MainSourceFile: conflict-offset.cpp
+Diagnostics:
+  - DiagnosticName: test-conflict-offset-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/conflict-offset.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/conflict-offset.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+  - DiagnosticName: test-conflict-offset-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/conflict-offset.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/conflict-offset.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+...
Index: 
clang-tools-extra/test/clang-apply-replacements/Inputs/conflict-offset/conflict-offset.cpp
===
--- /dev/null
+++ 
clang-tools-extra/test/clang-apply-replacements/Inputs/conflict-offset/conflict-offset.cpp
@@ -0,0 +1,4 @@
+class MyType {};
+// CHECK: #include 
+// CHECK-NEXT: #include 
+// CEHCK-NEXT: class MyType {};
Index: 
clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
===
--- clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
+++ clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
@@ -231,7 +231,19 @@
 // For now, printing directly the error reported by `AtomicChange` is
 // the easiest solution.
 errs() << llvm::toString(std::move(Err)) << "\n";
-ConflictDetected = true;
+tooling::Replacements &Replacements = FileChange.getRefReplacements();
+unsigned NewOffset = 
Replacements.getShiftedCodePosition(R.getOffset());
+unsigned NewLength =
+Replacements.getShiftedCodePosition(R.getOffset() + R.getLength()) 
-
+NewOffset;
+if (NewLength == R.getLength()) {
+  tooling::Replacement RR = tooling::Replacement(
+  R.getFilePath(), NewOffset, NewLength, R.getReplacementText());
+ 

[PATCH] D123924: [clang-apply-replacements] Added support for adjusting conflict offset.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 423355.
Sockke retitled this revision from "[WIP][clang-apply-replacements] Added 
support for adjusting conflict offset." to "[clang-apply-replacements] Added 
support for adjusting conflict offset.".
Sockke added a comment.
Herald added a subscriber: carlosgalvezp.

Add an option to ignore insert conflict.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D123924/new/

https://reviews.llvm.org/D123924

Files:
  
clang-tools-extra/clang-apply-replacements/include/clang-apply-replacements/Tooling/ApplyReplacements.h
  clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
  clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
  clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
  clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
  clang/include/clang/Tooling/Refactoring/AtomicChange.h

Index: clang/include/clang/Tooling/Refactoring/AtomicChange.h
===
--- clang/include/clang/Tooling/Refactoring/AtomicChange.h
+++ clang/include/clang/Tooling/Refactoring/AtomicChange.h
@@ -116,6 +116,8 @@
   /// Returns a const reference to existing replacements.
   const Replacements &getReplacements() const { return Replaces; }
 
+  Replacements &getRefReplacements() { return Replaces; }
+
   llvm::ArrayRef getInsertedHeaders() const {
 return InsertedHeaders;
   }
Index: clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
@@ -0,0 +1,5 @@
+// RUN: mkdir -p %T/Inputs/ignore-conflict
+// RUN: grep -Ev "// *[A-Z-]+:" %S/Inputs/ignore-conflict/ignore-conflict.cpp > %T/Inputs/ignore-conflict/ignore-conflict.cpp
+// RUN: sed "s#\$(path)#%/T/Inputs/ignore-conflict#" %S/Inputs/ignore-conflict/file1.yaml > %T/Inputs/ignore-conflict/file1.yaml
+// RUN: clang-apply-replacements --ignore-insert-conflict %T/Inputs/ignore-conflict
+// RUN: FileCheck -input-file=%T/Inputs/ignore-conflict/ignore-conflict.cpp %S/Inputs/ignore-conflict/ignore-conflict.cpp
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
@@ -0,0 +1,4 @@
+class MyType {};
+// CHECK: #include 
+// CHECK-NEXT: #include 
+// CEHCK-NEXT: class MyType {};
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
@@ -0,0 +1,24 @@
+---
+MainSourceFile: ignore-conflict.cpp
+Diagnostics:
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+...
Index: clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
===
--- clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+++ clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
@@ -177,6 +177,7 @@
 def apply_fixes(args, clang_apply_replacements_binary, tmpdir):
   """Calls clang-apply-fixes on a given directory."""
   invocation = [clang_apply_replacements_binary]
+  invocation.append('-ignore-insert-conflict')
   if args.format:
 invocation.append('-format')
   if args.style:
Index: clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
===
--- clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
+++ clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
@@ -42,6 +42,11 @@
  "merging/replacing."),
 cl::init(false), cl::cat(ReplacementCategory));
 
+static cl::opt IgnoreInsertConflict(
+"ignore-insert-conflict",
+cl::desc("Ignore insert conflict and keep running to fix."),
+cl::init(false), cl::cat(ReplacementCategory));
+
 static cl::opt DoFormat(
 "format",
 

[PATCH] D123924: [clang-apply-replacements] Added support for adjusting conflict offset.

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

It stands to reason that there should be no insert conflicts in the YAML 
generated by clang-tidy except for the header insertion. The two checks that 
caused the conflict should be fixed in clang-tidy.


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[PATCH] D123924: [clang-apply-replacements] Added an option to ignore insert conflict.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 423359.
Sockke retitled this revision from "[clang-apply-replacements] Added support 
for adjusting conflict offset." to "[clang-apply-replacements] Added an option 
to ignore insert conflict.".

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Files:
  
clang-tools-extra/clang-apply-replacements/include/clang-apply-replacements/Tooling/ApplyReplacements.h
  clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
  clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
  clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
  clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
  clang/include/clang/Tooling/Refactoring/AtomicChange.h

Index: clang/include/clang/Tooling/Refactoring/AtomicChange.h
===
--- clang/include/clang/Tooling/Refactoring/AtomicChange.h
+++ clang/include/clang/Tooling/Refactoring/AtomicChange.h
@@ -116,6 +116,8 @@
   /// Returns a const reference to existing replacements.
   const Replacements &getReplacements() const { return Replaces; }
 
+  Replacements &getRefReplacements() { return Replaces; }
+
   llvm::ArrayRef getInsertedHeaders() const {
 return InsertedHeaders;
   }
Index: clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
@@ -0,0 +1,5 @@
+// RUN: mkdir -p %T/Inputs/ignore-conflict
+// RUN: grep -Ev "// *[A-Z-]+:" %S/Inputs/ignore-conflict/ignore-conflict.cpp > %T/Inputs/ignore-conflict/ignore-conflict.cpp
+// RUN: sed "s#\$(path)#%/T/Inputs/ignore-conflict#" %S/Inputs/ignore-conflict/file1.yaml > %T/Inputs/ignore-conflict/file1.yaml
+// RUN: clang-apply-replacements --ignore-insert-conflict %T/Inputs/ignore-conflict
+// RUN: FileCheck -input-file=%T/Inputs/ignore-conflict/ignore-conflict.cpp %S/Inputs/ignore-conflict/ignore-conflict.cpp
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
@@ -0,0 +1,4 @@
+class MyType {};
+// CHECK: #include 
+// CHECK-NEXT: #include 
+// CEHCK-NEXT: class MyType {};
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
@@ -0,0 +1,24 @@
+---
+MainSourceFile: ignore-conflict.cpp
+Diagnostics:
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+...
Index: clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
===
--- clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+++ clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
@@ -177,6 +177,7 @@
 def apply_fixes(args, clang_apply_replacements_binary, tmpdir):
   """Calls clang-apply-fixes on a given directory."""
   invocation = [clang_apply_replacements_binary]
+  invocation.append('-ignore-insert-conflict')
   if args.format:
 invocation.append('-format')
   if args.style:
Index: clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
===
--- clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
+++ clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
@@ -42,6 +42,11 @@
  "merging/replacing."),
 cl::init(false), cl::cat(ReplacementCategory));
 
+static cl::opt IgnoreInsertConflict(
+"ignore-insert-conflict",
+cl::desc("Ignore insert conflict and keep running to fix."),
+cl::init(false), cl::cat(ReplacementCategory));
+
 static cl::opt DoFormat(
 "format",
 cl::desc("Enable formatting of code changed by applying replacements.\n"
@@ -131,7 +136,7 @@
   SourceManager SM

[PATCH] D123924: [clang-apply-replacements] Added an option to ignore insert conflict.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 425166.
Sockke added a comment.

Rename the function.


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Files:
  
clang-tools-extra/clang-apply-replacements/include/clang-apply-replacements/Tooling/ApplyReplacements.h
  clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
  clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
  clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
  clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
  clang/include/clang/Tooling/Refactoring/AtomicChange.h

Index: clang/include/clang/Tooling/Refactoring/AtomicChange.h
===
--- clang/include/clang/Tooling/Refactoring/AtomicChange.h
+++ clang/include/clang/Tooling/Refactoring/AtomicChange.h
@@ -116,6 +116,8 @@
   /// Returns a const reference to existing replacements.
   const Replacements &getReplacements() const { return Replaces; }
 
+  Replacements &getReplacements() { return Replaces; }
+
   llvm::ArrayRef getInsertedHeaders() const {
 return InsertedHeaders;
   }
Index: clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
@@ -0,0 +1,5 @@
+// RUN: mkdir -p %T/Inputs/ignore-conflict
+// RUN: grep -Ev "// *[A-Z-]+:" %S/Inputs/ignore-conflict/ignore-conflict.cpp > %T/Inputs/ignore-conflict/ignore-conflict.cpp
+// RUN: sed "s#\$(path)#%/T/Inputs/ignore-conflict#" %S/Inputs/ignore-conflict/file1.yaml > %T/Inputs/ignore-conflict/file1.yaml
+// RUN: clang-apply-replacements --ignore-insert-conflict %T/Inputs/ignore-conflict
+// RUN: FileCheck -input-file=%T/Inputs/ignore-conflict/ignore-conflict.cpp %S/Inputs/ignore-conflict/ignore-conflict.cpp
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
@@ -0,0 +1,4 @@
+class MyType {};
+// CHECK: #include 
+// CHECK-NEXT: #include 
+// CEHCK-NEXT: class MyType {};
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
@@ -0,0 +1,24 @@
+---
+MainSourceFile: ignore-conflict.cpp
+Diagnostics:
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+...
Index: clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
===
--- clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+++ clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
@@ -178,6 +178,7 @@
 def apply_fixes(args, clang_apply_replacements_binary, tmpdir):
   """Calls clang-apply-fixes on a given directory."""
   invocation = [clang_apply_replacements_binary]
+  invocation.append('-ignore-insert-conflict')
   if args.format:
 invocation.append('-format')
   if args.style:
Index: clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
===
--- clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
+++ clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
@@ -42,6 +42,11 @@
  "merging/replacing."),
 cl::init(false), cl::cat(ReplacementCategory));
 
+static cl::opt IgnoreInsertConflict(
+"ignore-insert-conflict",
+cl::desc("Ignore insert conflict and keep running to fix."),
+cl::init(false), cl::cat(ReplacementCategory));
+
 static cl::opt DoFormat(
 "format",
 cl::desc("Enable formatting of code changed by applying replacements.\n"
@@ -131,7 +136,7 @@
   SourceManager SM(Diagnostics, Files);
 
   FileToChangesMap Changes;
-  if (!mergeAndDeduplicate(TURs, TUDs, Changes, SM))
+  if (!mergeAndDeduplicate(TURs, TU

[PATCH] D123924: [clang-apply-replacements] Added an option to ignore insert conflict.

[gehry via Phabricator via cfe-commits]

Sockke marked an inline comment as done.
Sockke added a comment.

Friendly ping.


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[PATCH] D128697: [clang-tidy] Add new check `bugprone-unhandled-exception-at-sto`

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


Repository:
  rG LLVM Github Monorepo

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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 445792.
Sockke added a comment.

Added test cases where there is a struct with an anonymous union and another 
field that does need an initializer.


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
@@ -552,3 +552,30 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
+
+struct S3 {
+  S3() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: constructor does not initialize these fields: A [cppcoreguidelines-pro-type-member-init]
+  int A;
+  // CHECK-FIXES: int A{};
+  union {
+int B;
+int C = 0;
+  };
+};
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -201,6 +201,11 @@
   Fixed an issue when there was already an initializer in the constructor and
   the check would try to create another initializer for the same member.
 
+- Fixed a false positive in :doc:`cppcoreguidelines-pro-type-member-init
+  ` when warnings
+  would be emitted for uninitialized members of an anonymous union despite
+  there being an initializer for one of the other members.
+
 - Fixed a false positive in :doc:`cppcoreguidelines-virtual-class-destructor
   ` involving
   ``final`` classes. The check will not diagnose classes marked ``final``, since
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,20 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion()) {
+  AnyMemberHasInitPerUnion = true;
+  removeFieldInitialized(F, FieldsToInit);
+}
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +455,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +496,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = false;
   forEachFieldWithFilter(Clas

[PATCH] D123924: [clang-apply-replacements] Added an option to ignore insert conflict.

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


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[PATCH] D116593: Fix `performance-unnecessary-value-param` for template specialization

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 430621.
Sockke added a comment.

rebased.


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Files:
  clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
  
clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
@@ -109,7 +109,7 @@
 
 template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType S, T V) {
   // CHECK-MESSAGES: [[@LINE-1]]:90: warning: the const qualified parameter 'S'
-  // CHECK-FIXES: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
+  // CHECK-FIXES-NOT: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
 }
 
 void instantiated() {
@@ -381,3 +381,24 @@
   // CHECK-FIXES: void templateFunction(ExpensiveToCopyType E) {
   E.constReference();
 }
+
+template 
+T templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:54: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: T templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return T();
+}
+
+template <>
+bool templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:57: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: bool templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return true;
+}
+
+template <>
+int templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:56: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: int templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return 0;
+}
Index: clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
@@ -69,7 +69,7 @@
 
 template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType S, T V) {
   // CHECK-MESSAGES: [[@LINE-1]]:90: warning: the const qualified parameter 'S'
-  // CHECK-FIXES: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
+  // CHECK-FIXES-NOT: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
 }
 
 void instantiated() {
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -185,6 +185,10 @@
   ` when the parameter is
   referenced by an lvalue.
 
+- Fixed a crash in :doc:`performance-unnecessary-value-param
+  ` when the specialization
+  template has an unnecessary value paramter. Removed the fix for a template.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
===
--- clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
+++ clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
@@ -51,18 +51,6 @@
   return Matches.empty();
 }
 
-bool isExplicitTemplateSpecialization(const FunctionDecl &Function) {
-  if (const auto *SpecializationInfo = Function.getTemplateSpecializationInfo())
-if (SpecializationInfo->getTemplateSpecializationKind() ==
-TSK_ExplicitSpecialization)
-  return true;
-  if (const auto *Method = llvm::dyn_cast(&Function))
-if (Method->getTemplatedKind() == FunctionDecl::TK_MemberSpecialization &&
-Method->getMemberSpecializationInfo()->isExplicitSpecialization())
-  return true;
-  return false;
-}
-
 } // namespace
 
 UnnecessaryValueParamCheck::UnnecessaryValueParamCheck(
@@ -147,11 +135,12 @@
   // 2. the function is virtual as it might break overrides
   // 3. the function is referenced outside of a call expression within the
   //compilation unit as the signature change could introduce build errors.
-  // 4. the function is an explicit template specialization.
+  // 4. the function is a primary template or an explicit template
+  // specialization.
   const auto *Method = llvm::dyn_cast(Function);
   if (Param->getBeginLoc().isMacroID() || (Method && Method->isVirtual()) ||
   isReferencedOutsideOfCallExpr(*Function, *Result.Context) ||
-  isExplicitTemplateSpecialization(*F

[PATCH] D123924: [clang-apply-replacements] Added an option to ignore insert conflict.

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Hi, Could anyone please review this diff?


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[PATCH] D116593: Fix `performance-unnecessary-value-param` for template specialization

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Sockke added a comment.

I'm not quite sure why the test case is not passing on Windows, could you 
please check this problem? @flx


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[PATCH] D108370: [clang-tidy] Fix wrong FixIt about union in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Hi, Could you please take some time to review this diff again? @aaron.ballman


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[PATCH] D108370: [clang-tidy] Fix wrong FixIt about union in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 374430.
Sockke added a comment.

Update!


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -516,3 +516,39 @@
 
 PositiveDefaultConstructorOutOfDecl::PositiveDefaultConstructorOutOfDecl() = 
default;
 // CHECK-MESSAGES: :[[@LINE-1]]:1: warning: constructor does not initialize 
these fields: F
+
+union U1 {
+  U1() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: union constructor should 
initialize one of these fields: X, K, Z, Y
+  int X;
+  // CHECK-FIXES: int X{};
+  union {
+int K;
+// CHECK-FIXES-NOT: int K{};
+  };
+  union {
+int Z;
+// CHECK-FIXES-NOT: int Z{};
+int Y;
+// CHECK-FIXES-NOT: int Y{};
+  };
+};
+
+union U2 {
+  U2() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: union constructor should 
initialize one of these fields: B, C, A
+  struct {
+int B;
+// CHECK-FIXES: int B{};
+union {
+  struct {
+PositiveMultipleConstructors Value;
+// CHECK-FIXES-NOT: PositiveMultipleConstructors Value{};
+  };
+  int C;
+  // CHECK-FIXES: int C{};
+};
+  };
+  int A;
+  // CHECK-FIXES-NOT: int A{};
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -44,6 +44,23 @@
   }
 }
 
+template 
+void forEachFieldWithFilter(const RecordDecl &Record, const T &Fields,
+bool &AnyMemberHasInitPerUnion, Func &&Fn) {
+  for (const FieldDecl *F : Fields) {
+if (F->isAnonymousStructOrUnion()) {
+  if (const CXXRecordDecl *R = F->getType()->getAsCXXRecordDecl()) {
+AnyMemberHasInitPerUnion = false;
+forEachFieldWithFilter(*R, R->fields(), AnyMemberHasInitPerUnion, Fn);
+  }
+} else {
+  Fn(F);
+}
+if (Record.isUnion() && AnyMemberHasInitPerUnion)
+  break;
+  }
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -461,8 +478,9 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  SmallPtrSet UnionsSeen;
-  forEachField(ClassDecl, OrderedFields, [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))
   return;
 // Don't suggest fixes for enums because we don't know a good default.
@@ -471,8 +489,8 @@
 if (F->getType()->isEnumeralType() ||
 (!getLangOpts().CPlusPlus20 && F->isBitField()))
   return;
-if (!F->getParent()->isUnion() || UnionsSeen.insert(F->getParent()).second)
-  FieldsToFix.insert(F);
+FieldsToFix.insert(F);
+AnyMemberHasInitPerUnion = true;
   });
   if (FieldsToFix.empty())
 return;


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -516,3 +516,39 @@
 
 PositiveDefaultConstructorOutOfDecl::PositiveDefaultConstructorOutOfDecl() = default;
 // CHECK-MESSAGES: :[[@LINE-1]]:1: warning: constructor does not initialize these fields: F
+
+union U1 {
+  U1() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: union constructor should initialize one of these fields: X, K, Z, Y
+  int X;
+  // CHECK-FIXES: int X{};
+  union {
+int K;
+// CHECK-FIXES-NOT: int K{};
+  };
+  union {
+int Z;
+// CHECK-FIXES-NOT: int Z{};
+int Y;
+// CHECK-FIXES-NOT: int Y{};
+  };
+};
+
+union U2 {
+  U2() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: union constructor should initialize one of these fields: B, C, A
+  struct {
+int B;
+// CHECK-FIXES: int B{};
+union {
+  struct {
+PositiveMultipleConstructors Value;
+// CHECK-FIXES-NOT: PositiveMultipleConstructors Value{};
+  };
+  int C;
+  // CHECK-FIXES: int C{};
+};
+  };
+  int A;
+  // CHECK-FIXES-NOT: 

[PATCH] D108370: [clang-tidy] Fix wrong FixIt about union in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added inline comments.



Comment at: 
clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp:484
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))
   return;

aaron.ballman wrote:
> Given that we're touching this code, we might as well make clang-format happy 
> with it (though I can't quite spot what it wants changed, so if it turns out 
> to be a bad idea for some reason, I don't insist).
> Given that we're touching this code, we might as well make clang-format happy 
> with it (though I can't quite spot what it wants changed, so if it turns out 
> to be a bad idea for some reason, I don't insist).

Yes, I have tried to format this code with clang-format but it does not work 
perfectly.


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[PATCH] D107450: [clang-tidy] Fix wrong FIxIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Hi, Could you please take some time to review this diff again? @whisperity


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[PATCH] D108370: [clang-tidy] Fix wrong FixIt about union in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

In D108370#3017800 , @aaron.ballman 
wrote:

> LGTM!

Thanks for your review!


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[PATCH] D108370: [clang-tidy] Fix wrong FixIt about union in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

In D108370#3017800 , @aaron.ballman 
wrote:

> LGTM!

Thanks for your review! I don't have commit access, here is my information:
Name: liuke
Email: liuke.ge...@bytedance.com


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[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables by removing the enum FixIt, and add support for initialization check of scoped enum.

[gehry via Phabricator via cfe-commits]

Sockke marked 2 inline comments as done.
Sockke added a comment.

In D106431#2913101 , @aaron.ballman 
wrote:

> In D106431#2912589 , @Sockke wrote:
>
>> Thank you for your reply! I generally understand what you mean, but there 
>> are three cases, namely, no diagnosis, providing diagnosis, and providing 
>> diagnosis & FixIt.  Only by judging whether "diagnosis" is null may fail to 
>> achieve the goal.  I have revised it a little bit, do you think that's 
>> alright? @aaron.ballman
>
> By how the code looks, you made the exact changes I was hoping to see. Thank 
> you!

Cheers! Can it be merged? @aaron.ballman




Comment at: clang-tools-extra/docs/ReleaseNotes.rst:156
+
+  ⁣Added support for initialization check of the scoped enum
+

whisperity wrote:
> Unterminated sequence. Also, where is this feature implemented?
Before that, isIntegerType() would not treat scoped enum as an integer, so 
scoped enum was ignored. But isEnumeralType() will not.


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[PATCH] D106431: [clang-tidy] Fix cppcoreguidelines-init-variables by removing the enum FixIt, and add support for initialization check of scoped enum.

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

In D106431#2916551 , @whisperity 
wrote:

> In D106431#2916542 , @Sockke wrote:
>
>> Cheers! Can it be merged? @aaron.ballman
>
> Yes, but I think the patch needs to be rebased first as the pre-merge checks 
> CI system said "patch application failed". Do you have commit access? If not, 
> could you please specify the username and e-mail (the values of Git config 
> variable `user.name` and `user.email`) you would like to have associated with 
> the commit?

Thanks a lot!

Name: liuke
Email: liuke.ge...@bytedance.com


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[PATCH] D107450: [clang-tidy] Fix wrong and missing warnings in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added reviewers: alexfh, aaron.ballman, whisperity, steven.zhang, MTC.
Herald added subscribers: rnkovacs, xazax.hun.
Sockke requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.

There are incorrect Fixit and missing warnings:
case 1:
A trivially-copyable object wrapped by std::move is passed to the function with 
rvalue reference parameters. Removing std::move will cause compilation errors.

  void showInt(int&&) {}
  void testInt() {
  int a = 10;
  // expect: warning + nofix
  showInt(std::move(a));  // showInt(a) <--- wrong fix
  }
  
  struct Tmp {};
  void showTmp(Tmp&&) {}
  void testTmp() {
  Tmp t;
  // expect: warning + nofix
  showTmp(std::move(t));  // showTmp(t) <--- wrong fix
  }

case 2:
Using std::move() to wrap a pure rvalue or expiring value has no effect. Remove 
std::move().
The object returned in the function does not need to be wrapped with std::move. 
Because the returned nontrivially-copyable object will first call its own move 
constructor.

  struct TmpNR {
  TmpNR() {}
  TmpNR(const TmpNR&) {}
  TmpNR(TmpNR&&) {}
  };
  void showTmpNR(TmpNR&&) {}
  TmpNR testTmpNR() {
  TmpNR tnr;
  // expect: warning + fixit
  TmpNR tnr2 = std::move(TmpNR()); //  no warning <--- wrong diagnosis
  // expect: warning + fixit
  return std::move(tnr);  //  no warning <--- wrong diagnosis
  }


Repository:
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https://reviews.llvm.org/D107450

Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -70,7 +70,11 @@
   // CHECK-FIXES: return x3;
 }
 
-A f4(A x4) { return std::move(x4); }
+A f4(A x4) { 
+  return std::move(x4); 
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: return x4;
+}
 
 A f5(const A x5) {
   return std::move(x5);
@@ -246,3 +250,73 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&) {}
+int testInt() {
+  int a = 10;
+  int b = std::move(a);
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  // CHECK-FIXES: int b = a;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  return std::move(a);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  // CHECK-FIXES: return a;
+}
+
+struct Tmp {};
+void showTmp(Tmp &&) {}
+Tmp testTmp() {
+  Tmp t;
+  Tmp t1 = std::move(t);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: Tmp t1 = t;
+  Tmp t2 = std::move(Tmp());
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: std::move of the expression of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: Tmp t2 = Tmp();
+  showTmp(std::move(t));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  return std::move(t);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: return t;
+}
+
+struct Tmp_UnTriviallyC {
+  Tmp_UnTriviallyC() {}
+  Tmp_UnTriviallyC(const Tmp_UnTriviallyC &) {}
+};
+void showTmp_UnTriviallyC(Tmp_UnTriviallyC &&) {}
+Tmp_UnTriviallyC testTmp_UnTriviallyC() {
+  Tmp_UnTriviallyC tn;
+  Tmp_UnTriviallyC tn1 = std::move(tn);
+  // CHECK-MESSAGES: :[[@LINE-1]]:26: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyC tn1 = tn;
+  Tmp_UnTriviallyC tn2 = std::move(Tmp_UnTriviallyC());
+  // CHECK-MESSAGES: :[[@LINE-1]]:26: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyC tn2 = Tmp_UnTriviallyC();
+  showTmp_UnTriviallyC(std::move(tn));
+  // Expect no warning given here.
+  return std::move(tn);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: passing result of std::move() as a const reference argument; no move will actually happen 
+  // CHECK-FIXES: return tn;
+}
+
+struct Tmp_UnTriviallyCR {
+  Tmp_UnTriviallyCR() {}
+  Tmp_UnTriviallyCR(const Tmp_UnTriviall

[PATCH] D107450: [clang-tidy] Fix wrong and missing warnings in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 364404.
Sockke added a comment.

format.


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Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -70,7 +70,11 @@
   // CHECK-FIXES: return x3;
 }
 
-A f4(A x4) { return std::move(x4); }
+A f4(A x4) { 
+  return std::move(x4); 
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: return x4;
+}
 
 A f5(const A x5) {
   return std::move(x5);
@@ -246,3 +250,73 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&) {}
+int testInt() {
+  int a = 10;
+  int b = std::move(a);
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  // CHECK-FIXES: int b = a;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  return std::move(a);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  // CHECK-FIXES: return a;
+}
+
+struct Tmp {};
+void showTmp(Tmp &&) {}
+Tmp testTmp() {
+  Tmp t;
+  Tmp t1 = std::move(t);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: Tmp t1 = t;
+  Tmp t2 = std::move(Tmp());
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: std::move of the expression of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: Tmp t2 = Tmp();
+  showTmp(std::move(t));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  return std::move(t);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: return t;
+}
+
+struct Tmp_UnTriviallyC {
+  Tmp_UnTriviallyC() {}
+  Tmp_UnTriviallyC(const Tmp_UnTriviallyC &) {}
+};
+void showTmp_UnTriviallyC(Tmp_UnTriviallyC &&) {}
+Tmp_UnTriviallyC testTmp_UnTriviallyC() {
+  Tmp_UnTriviallyC tn;
+  Tmp_UnTriviallyC tn1 = std::move(tn);
+  // CHECK-MESSAGES: :[[@LINE-1]]:26: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyC tn1 = tn;
+  Tmp_UnTriviallyC tn2 = std::move(Tmp_UnTriviallyC());
+  // CHECK-MESSAGES: :[[@LINE-1]]:26: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyC tn2 = Tmp_UnTriviallyC();
+  showTmp_UnTriviallyC(std::move(tn));
+  // Expect no warning given here.
+  return std::move(tn);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: passing result of std::move() as a const reference argument; no move will actually happen 
+  // CHECK-FIXES: return tn;
+}
+
+struct Tmp_UnTriviallyCR {
+  Tmp_UnTriviallyCR() {}
+  Tmp_UnTriviallyCR(const Tmp_UnTriviallyCR &) {}
+  Tmp_UnTriviallyCR(Tmp_UnTriviallyCR &&) {}
+};
+void showTmp_UnTriviallyCR(Tmp_UnTriviallyCR &&) {}
+Tmp_UnTriviallyCR testTmp_UnTriviallyCR() {
+  Tmp_UnTriviallyCR tnr;
+  Tmp_UnTriviallyCR tnr1 = std::move(tnr);
+  // Expect no warning given here.
+  Tmp_UnTriviallyCR tnr2 = std::move(Tmp_UnTriviallyCR());
+  // CHECK-MESSAGES: :[[@LINE-1]]:28: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyCR tnr2 = Tmp_UnTriviallyCR();
+  showTmp_UnTriviallyCR(std::move(tnr));
+  // Expect no warning given here.
+  return std::move(tnr);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: return tnr;
+}
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
@@ -45,19 +45,42 @@
unless(isInTemplateInstantiation()))
   .bind("call-move");
 
-  Finder->addMatcher(MoveCallMatcher, this);
+  Finder->addMatcher(
+  returnStmt(
+  hasReturnValue(anyOf(
+  ignoringImplicit(ignoringParenCasts(MoveCallMatcher)),

[PATCH] D107450: [clang-tidy] Fix wrong and missing warnings in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Thank you for your reviews, @Quuxplusone, @whisperity, @MTC. I was also 
considering adding new diagnoses to the current check for these special cases, 
but I am not sure how to classify and describe them correctly, and whether they 
need to be added to the new check.
First of all, I want to make sure that the timing of warning and FxiIt in these 
cases is correct? If the above is no problem, I think I need to classify and 
modify the diagnostic information in the next step, is that right?


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[PATCH] D107641: [clang-tidy] fix duplicate '{}' in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added reviewers: aaron.ballman, gribozavr, flx, whisperity, 
steven.zhang, MTC.
Herald added subscribers: shchenz, rnkovacs, kbarton, xazax.hun, nemanjai.
Sockke requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.

The overload of the constructor will repeatedly fix the member variables that 
need to be initialized.
Removed the duplicate '{}'.

  struct A {
A() {}
A(int) {}
int _var;  // int _var{}{};  <--  wrong fix
  };


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D107641

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -210,7 +210,7 @@
 
   // FIXME: The fix-its here collide providing an erroneous fix
   int A, B;
-  // CHECK-FIXES: int A{}{}{}, B{}{}{};
+  // CHECK-FIXES: int A{}, B{};
 };
 
 typedef struct {
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
@@ -10,6 +10,7 @@
 #define 
LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_MEMBER_INIT_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -72,6 +73,10 @@
   // instead of brace initialization. Only effective in C++11 mode. Default is
   // false.
   bool UseAssignment;
+
+  // Record the member variables that have been initialized to prevent repeated
+  // initialization.
+  llvm::DenseSet HasRecordClasMemberSet;
 };
 
 } // namespace cppcoreguidelines
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -435,15 +435,24 @@
   // Collect all the fields we need to initialize, including indirect fields.
   SmallPtrSet AllFieldsToInit;
   forEachField(ClassDecl, FieldsToInit,
-   [&](const FieldDecl *F) { AllFieldsToInit.insert(F); });
-  if (AllFieldsToInit.empty())
+   [&](const FieldDecl *F) { 
+if (!HasRecordClasMemberSet.count(F))
+{
+  AllFieldsToInit.insert(F);
+  HasRecordClasMemberSet.insert(F);
+}
+  });
+  if (FieldsToInit.empty())
 return;
 
   DiagnosticBuilder Diag =
   diag(Ctor ? Ctor->getBeginLoc() : ClassDecl.getLocation(),
"%select{|union }0constructor %select{does not|should}0 initialize "
"%select{|one of }0these fields: %1")
-  << IsUnion << toCommaSeparatedString(OrderedFields, AllFieldsToInit);
+  << IsUnion << toCommaSeparatedString(OrderedFields, FieldsToInit);
+
+  if (AllFieldsToInit.empty())
+return;
 
   // Do not propose fixes for constructors in macros since we cannot place them
   // correctly.


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -210,7 +210,7 @@
 
   // FIXME: The fix-its here collide providing an erroneous fix
   int A, B;
-  // CHECK-FIXES: int A{}{}{}, B{}{}{};
+  // CHECK-FIXES: int A{}, B{};
 };
 
 typedef struct {
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_MEMBER_INIT_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -72,6 +73,10 @@
   // instead of brace initialization. Only effective in C++11 mode. Default is
   // false.
   bool UseAssignment;
+
+  // Record the member variables that have been initialized to prevent repeated
+  // initialization.
+  llvm::DenseSet HasRecordClasMemberSet;
 };
 
 } // namespace cppcoreguidelines
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeM

[PATCH] D107641: [clang-tidy] fix duplicate '{}' in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 365159.
Sockke added a comment.

Format and add some description.


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  https://reviews.llvm.org/D107641/new/

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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -208,9 +208,8 @@
   PositiveMultipleConstructors(const PositiveMultipleConstructors &) {}
   // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: constructor does not initialize 
these fields: A, B
 
-  // FIXME: The fix-its here collide providing an erroneous fix
   int A, B;
-  // CHECK-FIXES: int A{}{}{}, B{}{}{};
+  // CHECK-FIXES: int A{}, B{};
 };
 
 typedef struct {
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
@@ -10,6 +10,7 @@
 #define 
LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_MEMBER_INIT_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -72,6 +73,10 @@
   // instead of brace initialization. Only effective in C++11 mode. Default is
   // false.
   bool UseAssignment;
+
+  // Record the member variables that have been initialized to prevent repeated
+  // initialization.
+  llvm::DenseSet HasRecordClasMemberSet;
 };
 
 } // namespace cppcoreguidelines
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -433,17 +433,25 @@
[&](const FieldDecl *F) { OrderedFields.push_back(F); });
 
   // Collect all the fields we need to initialize, including indirect fields.
+  // It only includes fields that have not been fixed
   SmallPtrSet AllFieldsToInit;
-  forEachField(ClassDecl, FieldsToInit,
-   [&](const FieldDecl *F) { AllFieldsToInit.insert(F); });
-  if (AllFieldsToInit.empty())
+  forEachField(ClassDecl, FieldsToInit, [&](const FieldDecl *F) {
+if (!HasRecordClasMemberSet.count(F)) {
+  AllFieldsToInit.insert(F);
+  HasRecordClasMemberSet.insert(F);
+}
+  });
+  if (FieldsToInit.empty())
 return;
 
   DiagnosticBuilder Diag =
   diag(Ctor ? Ctor->getBeginLoc() : ClassDecl.getLocation(),
"%select{|union }0constructor %select{does not|should}0 initialize "
"%select{|one of }0these fields: %1")
-  << IsUnion << toCommaSeparatedString(OrderedFields, AllFieldsToInit);
+  << IsUnion << toCommaSeparatedString(OrderedFields, FieldsToInit);
+
+  if (AllFieldsToInit.empty())
+return;
 
   // Do not propose fixes for constructors in macros since we cannot place them
   // correctly.


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -208,9 +208,8 @@
   PositiveMultipleConstructors(const PositiveMultipleConstructors &) {}
   // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: constructor does not initialize these fields: A, B
 
-  // FIXME: The fix-its here collide providing an erroneous fix
   int A, B;
-  // CHECK-FIXES: int A{}{}{}, B{}{}{};
+  // CHECK-FIXES: int A{}, B{};
 };
 
 typedef struct {
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_MEMBER_INIT_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -72,6 +73,10 @@
   // instead of brace initialization. Only effective in C++11 mode. Default is
   // false.
   bool UseAssignment;
+
+  // Record the member variables that have been initialized to prevent repeated
+  // initialization.
+  llvm::DenseSet HasRecordClasMemberSet;
 };
 
 } // namespa

[PATCH] D107450: [clang-tidy] Fix wrong and missing warnings in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 365448.
Sockke added a comment.

update!


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Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -70,7 +70,11 @@
   // CHECK-FIXES: return x3;
 }
 
-A f4(A x4) { return std::move(x4); }
+A f4(A x4) { 
+  return std::move(x4); 
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: it's superfluous; a move will happen, with or without the std::move
+  // CHECK-FIXES: return x4;
+}
 
 A f5(const A x5) {
   return std::move(x5);
@@ -246,3 +250,73 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&) {}
+int testInt() {
+  int a = 10;
+  int b = std::move(a);
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  // CHECK-FIXES: int b = a;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; consider changing showInt's parameter from 'int'&& to 'int'&
+  return std::move(a);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  // CHECK-FIXES: return a;
+}
+
+struct Tmp {};
+void showTmp(Tmp &&) {}
+Tmp testTmp() {
+  Tmp t;
+  Tmp t1 = std::move(t);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: Tmp t1 = t;
+  Tmp t2 = std::move(Tmp());
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: std::move of the expression of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: Tmp t2 = Tmp();
+  showTmp(std::move(t));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; consider changing showTmp's parameter from 'Tmp'&& to 'Tmp'&
+  return std::move(t);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: return t;
+}
+
+struct Tmp_UnTriviallyC {
+  Tmp_UnTriviallyC() {}
+  Tmp_UnTriviallyC(const Tmp_UnTriviallyC &) {}
+};
+void showTmp_UnTriviallyC(Tmp_UnTriviallyC &&) {}
+Tmp_UnTriviallyC testTmp_UnTriviallyC() {
+  Tmp_UnTriviallyC tn;
+  Tmp_UnTriviallyC tn1 = std::move(tn);
+  // CHECK-MESSAGES: :[[@LINE-1]]:26: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyC tn1 = tn;
+  Tmp_UnTriviallyC tn2 = std::move(Tmp_UnTriviallyC());
+  // CHECK-MESSAGES: :[[@LINE-1]]:26: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyC tn2 = Tmp_UnTriviallyC();
+  showTmp_UnTriviallyC(std::move(tn));
+  // Expect no warning given here.
+  return std::move(tn);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: passing result of std::move() as a const reference argument; no move will actually happen 
+  // CHECK-FIXES: return tn;
+}
+
+struct Tmp_UnTriviallyCR {
+  Tmp_UnTriviallyCR() {}
+  Tmp_UnTriviallyCR(const Tmp_UnTriviallyCR &) {}
+  Tmp_UnTriviallyCR(Tmp_UnTriviallyCR &&) {}
+};
+void showTmp_UnTriviallyCR(Tmp_UnTriviallyCR &&) {}
+Tmp_UnTriviallyCR testTmp_UnTriviallyCR() {
+  Tmp_UnTriviallyCR tnr;
+  Tmp_UnTriviallyCR tnr1 = std::move(tnr);
+  // Expect no warning given here.
+  Tmp_UnTriviallyCR tnr2 = std::move(Tmp_UnTriviallyCR());
+  // CHECK-MESSAGES: :[[@LINE-1]]:28: warning: it's superfluous; a move will happen, with or without the std::move
+  // CHECK-FIXES: Tmp_UnTriviallyCR tnr2 = Tmp_UnTriviallyCR();
+  showTmp_UnTriviallyCR(std::move(tnr));
+  // Expect no warning given here.
+  return std::move(tnr);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: it's superfluous; a move will happen, with or without the std::move
+  // CHECK-FIXES: return tnr;
+}
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_MOVECONSTANTARGUMENTCHECK_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -36,6 +37,7 @@
 
 pr

[PATCH] D107450: [clang-tidy] Fix wrong and missing warnings in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 365455.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107450/new/

https://reviews.llvm.org/D107450

Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -70,7 +70,11 @@
   // CHECK-FIXES: return x3;
 }
 
-A f4(A x4) { return std::move(x4); }
+A f4(A x4) { 
+  return std::move(x4); 
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: it's superfluous; a move will happen, with or without the std::move
+  // CHECK-FIXES: return x4;
+}
 
 A f5(const A x5) {
   return std::move(x5);
@@ -246,3 +250,82 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&) {}
+int testInt() {
+  int a = 10;
+  int b = std::move(a);
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  // CHECK-FIXES: int b = a;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; consider changing showInt's parameter from 'int'&& to 'int'&
+  return std::move(a);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; remove std::move()
+  // CHECK-FIXES: return a;
+}
+template 
+void forwardToShowInt(T &&t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; consider changing forwardToShowInt's parameter from 'int'&& to 'int'&
+}
+
+struct Tmp {};
+void showTmp(Tmp &&) {}
+Tmp testTmp() {
+  Tmp t;
+  Tmp t1 = std::move(t);
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: Tmp t1 = t;
+  Tmp t2 = std::move(Tmp());
+  // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: std::move of the expression of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: Tmp t2 = Tmp();
+  showTmp(std::move(t));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; consider changing showTmp's parameter from 'Tmp'&& to 'Tmp'&
+  return std::move(t);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+  // CHECK-FIXES: return t;
+}
+
+struct Tmp_UnTriviallyC {
+  Tmp_UnTriviallyC() {}
+  Tmp_UnTriviallyC(const Tmp_UnTriviallyC &) {}
+};
+void showTmp_UnTriviallyC(Tmp_UnTriviallyC &&) {}
+Tmp_UnTriviallyC testTmp_UnTriviallyC() {
+  Tmp_UnTriviallyC tn;
+  Tmp_UnTriviallyC tn1 = std::move(tn);
+  // CHECK-MESSAGES: :[[@LINE-1]]:26: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyC tn1 = tn;
+  Tmp_UnTriviallyC tn2 = std::move(Tmp_UnTriviallyC());
+  // CHECK-MESSAGES: :[[@LINE-1]]:26: warning: passing result of std::move() as a const reference argument; no move will actually happen
+  // CHECK-FIXES: Tmp_UnTriviallyC tn2 = Tmp_UnTriviallyC();
+  showTmp_UnTriviallyC(std::move(tn));
+  // Expect no warning given here.
+  return std::move(tn);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: passing result of std::move() as a const reference argument; no move will actually happen 
+  // CHECK-FIXES: return tn;
+}
+
+struct Tmp_UnTriviallyCR {
+  Tmp_UnTriviallyCR() {}
+  Tmp_UnTriviallyCR(const Tmp_UnTriviallyCR &) {}
+  Tmp_UnTriviallyCR(Tmp_UnTriviallyCR &&) {}
+};
+void showTmp_UnTriviallyCR(Tmp_UnTriviallyCR &&) {}
+Tmp_UnTriviallyCR testTmp_UnTriviallyCR() {
+  Tmp_UnTriviallyCR tnr;
+  Tmp_UnTriviallyCR tnr1 = std::move(tnr);
+  // Expect no warning given here.
+  Tmp_UnTriviallyCR tnr2 = std::move(Tmp_UnTriviallyCR());
+  // CHECK-MESSAGES: :[[@LINE-1]]:28: warning: it's superfluous; a move will happen, with or without the std::move
+  // CHECK-FIXES: Tmp_UnTriviallyCR tnr2 = Tmp_UnTriviallyCR();
+  showTmp_UnTriviallyCR(std::move(tnr));
+  // Expect no warning given here.
+  return std::move(tnr);
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: it's superfluous; a move will happen, with or without the std::move
+  // CHECK-FIXES: return tnr;
+}
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
===
--- clang-tools-extra/clang-tidy/per

[PATCH] D107641: [clang-tidy] fix duplicate '{}' in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke marked 2 inline comments as done.
Sockke added a comment.

Any thoughts?


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[PATCH] D107641: [clang-tidy] fix duplicate '{}' in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke marked an inline comment as done.
Sockke added a comment.

Any thoughts? : )


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[PATCH] D107641: [clang-tidy] fix duplicate '{}' in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 365916.
Sockke added a comment.

update! @aaron.ballman @MTC


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107641/new/

https://reviews.llvm.org/D107641

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -208,9 +208,8 @@
   PositiveMultipleConstructors(const PositiveMultipleConstructors &) {}
   // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: constructor does not initialize 
these fields: A, B
 
-  // FIXME: The fix-its here collide providing an erroneous fix
   int A, B;
-  // CHECK-FIXES: int A{}{}{}, B{}{}{};
+  // CHECK-FIXES: int A{}, B{};
 };
 
 typedef struct {
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
@@ -10,6 +10,7 @@
 #define 
LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_MEMBER_INIT_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -72,6 +73,10 @@
   // instead of brace initialization. Only effective in C++11 mode. Default is
   // false.
   bool UseAssignment;
+
+  // Record the member variables that have been initialized to prevent repeated
+  // initialization.
+  llvm::DenseSet HasRecordClassMemberSet;
 };
 
 } // namespace cppcoreguidelines
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -433,17 +433,25 @@
[&](const FieldDecl *F) { OrderedFields.push_back(F); });
 
   // Collect all the fields we need to initialize, including indirect fields.
+  // It only includes fields that have not been fixed
   SmallPtrSet AllFieldsToInit;
-  forEachField(ClassDecl, FieldsToInit,
-   [&](const FieldDecl *F) { AllFieldsToInit.insert(F); });
-  if (AllFieldsToInit.empty())
+  forEachField(ClassDecl, FieldsToInit, [&](const FieldDecl *F) {
+if (!HasRecordClassMemberSet.contains(F)) {
+  AllFieldsToInit.insert(F);
+  HasRecordClassMemberSet.insert(F);
+}
+  });
+  if (FieldsToInit.empty())
 return;
 
   DiagnosticBuilder Diag =
   diag(Ctor ? Ctor->getBeginLoc() : ClassDecl.getLocation(),
"%select{|union }0constructor %select{does not|should}0 initialize "
"%select{|one of }0these fields: %1")
-  << IsUnion << toCommaSeparatedString(OrderedFields, AllFieldsToInit);
+  << IsUnion << toCommaSeparatedString(OrderedFields, FieldsToInit);
+
+  if (AllFieldsToInit.empty())
+return;
 
   // Do not propose fixes for constructors in macros since we cannot place them
   // correctly.


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -208,9 +208,8 @@
   PositiveMultipleConstructors(const PositiveMultipleConstructors &) {}
   // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: constructor does not initialize these fields: A, B
 
-  // FIXME: The fix-its here collide providing an erroneous fix
   int A, B;
-  // CHECK-FIXES: int A{}{}{}, B{}{}{};
+  // CHECK-FIXES: int A{}, B{};
 };
 
 typedef struct {
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_MEMBER_INIT_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -72,6 +73,10 @@
   // instead of brace initialization. Only effective in C++11 mode. Default is
   // false.
   bool UseAssignment;
+
+  // Record the member variables that have been initialized to prevent repeated
+  // initialization.
+  llvm::DenseSet HasRecordClassMemberSet;
 };
 
 } // names

[PATCH] D107450: [clang-tidy] Fix wrong and missing warnings in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke marked 8 inline comments as done.
Sockke added a comment.

In D107450#2938824 , @MTC wrote:

> I think we're a bit off track,  and @Sockke wants to accomplish more than one 
> goal in the same patch. I have summarized what we are currently discussing as 
> follow shows:
>
> 1. Fix the wrong AutoFix which blocks the compilation.
> 2. Find more 'unrecommended' std::move usage and give correct warning 
> messages.
> 3. Whether template should be taken into account.
>
> In addition, I would like to mention that we need to ensure that this check 
> should be consistent with `-Wpessimizing-move`, see 
> https://reviews.llvm.org/D7633, which has done the perfect job.
>
> I suggest that this patch be divided into two patches. In the current patch, 
> fix the **wrong AutoFix**. What the current check should look like is left in 
> the second patch for discussion. @Sockke do you mind simplifying this patch 
> and only achieving the first goal?

Yes, I originally wanted to make some improvements on the premise of keeping 
the old version of the idea. As Quuxplusone said, this improvement still does 
not meet the final requirements, which may require rewriting the entire 
checker.  Any other thoughts? @Quuxplusone,@aaron.ballman,@whisperity,@alexfh


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[PATCH] D107450: [clang-tidy] Fix wrong FIxIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 366225.
Sockke retitled this revision from "[clang-tidy] Fix wrong and missing warnings 
in performance-move-const-arg" to "[clang-tidy] Fix wrong FIxIt in 
performance-move-const-arg".
Sockke edited the summary of this revision.
Sockke added a comment.

Fix the wrong AutoFix which blocks the compilation.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107450/new/

https://reviews.llvm.org/D107450

Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -246,3 +246,27 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&) {}
+void testInt() {
+  int a = 10;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; consider changing showInt's parameter from 'int'&& to 'int'&
+}
+template 
+void forwardToShowInt(T &&t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; consider changing forwardToShowInt's parameter from 'int'&& to 'int'&
+}
+
+struct Tmp {};
+void showTmp(Tmp &&) {}
+void testTmp() {
+  Tmp t;
+  showTmp(std::move(t));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; remove std::move()
+}
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_MOVECONSTANTARGUMENTCHECK_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -36,6 +37,7 @@
 
 private:
   const bool CheckTriviallyCopyableMove;
+  llvm::DenseSet HasCheckedMoveSet;
 };
 
 } // namespace performance
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
@@ -50,7 +50,9 @@
   Finder->addMatcher(
   invocation(forEachArgumentWithParam(
  MoveCallMatcher,
- parmVarDecl(hasType(references(isConstQualified())
+ parmVarDecl(anyOf(hasType(references(isConstQualified())),
+   hasType(rValueReferenceType(
+ .bind("invocation-parm")))
   .bind("receiving-expr"),
   this);
 }
@@ -58,6 +60,15 @@
 void MoveConstArgCheck::check(const MatchFinder::MatchResult &Result) {
   const auto *CallMove = Result.Nodes.getNodeAs("call-move");
   const auto *ReceivingExpr = Result.Nodes.getNodeAs("receiving-expr");
+  const auto *InvocationParm =
+  Result.Nodes.getNodeAs("invocation-parm");
+
+  if (!ReceivingExpr && HasCheckedMoveSet.contains(CallMove))
+return;
+
+  if (ReceivingExpr)
+HasCheckedMoveSet.insert(CallMove);
+
   const Expr *Arg = CallMove->getArg(0);
   SourceManager &SM = Result.Context->getSourceManager();
 
@@ -90,20 +101,45 @@
   return;
 
 bool IsVariable = isa(Arg);
+bool IsRValueReferenceArg = false;
+StringRef FuncName;
 const auto *Var =
 IsVariable ? dyn_cast(Arg)->getDecl() : nullptr;
-auto Diag = diag(FileMoveRange.getBegin(),
- "std::move of the %select{|const }0"
- "%select{expression|variable %4}1 "
- "%select{|of the trivially-copyable type %5 }2"
- "has no effect; remove std::move()"
- "%select{| or make the variable non-const}3")
-<< IsConstArg << IsVariable << IsTriviallyCopyable
-<< (IsConstArg && IsVariable && !IsTriviallyCopyable) << Var
-<< Arg->getType();
+
+if (ReceivingExpr &&
+InvocationParm->getOriginalType()->isRValueReferenceType() &&
+!ReceivingExpr->getType()->isRecordType() && Arg->isLValue()) {
+  IsRValueReferenceArg = true;
+  if (Arg->getType()->isBuiltinType()) {
+const auto *ReceivingCallExpr = dyn_cast(ReceivingExpr);
+if (!ReceivingCallExpr)
+  return;
+FuncName = ReceivingCallExpr->getDirectCallee()->getName();
+  

[PATCH] D107450: [clang-tidy] Fix wrong FIxIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 366815.
Sockke added a comment.

update! Fixed some diagnostic descriptions.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107450/new/

https://reviews.llvm.org/D107450

Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -246,3 +246,27 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&) {}
+void testInt() {
+  int a = 10;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; consider changing showInt's parameter from 'int &&' to 'int'
+}
+template 
+void forwardToShowInt(T &&t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect
+}
+
+struct Tmp {};
+void showTmp(Tmp &&) {}
+void testTmp() {
+  Tmp t;
+  showTmp(std::move(t));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect
+}
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_MOVECONSTANTARGUMENTCHECK_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -36,6 +37,7 @@
 
 private:
   const bool CheckTriviallyCopyableMove;
+  llvm::DenseSet HasCheckedMoveSet;
 };
 
 } // namespace performance
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
@@ -50,7 +50,9 @@
   Finder->addMatcher(
   invocation(forEachArgumentWithParam(
  MoveCallMatcher,
- parmVarDecl(hasType(references(isConstQualified())
+ parmVarDecl(anyOf(hasType(references(isConstQualified())),
+   hasType(rValueReferenceType(
+ .bind("invocation-parm")))
   .bind("receiving-expr"),
   this);
 }
@@ -58,6 +60,15 @@
 void MoveConstArgCheck::check(const MatchFinder::MatchResult &Result) {
   const auto *CallMove = Result.Nodes.getNodeAs("call-move");
   const auto *ReceivingExpr = Result.Nodes.getNodeAs("receiving-expr");
+  const auto *InvocationParm =
+  Result.Nodes.getNodeAs("invocation-parm");
+
+  if (!ReceivingExpr && HasCheckedMoveSet.contains(CallMove))
+return;
+
+  if (ReceivingExpr)
+HasCheckedMoveSet.insert(CallMove);
+
   const Expr *Arg = CallMove->getArg(0);
   SourceManager &SM = Result.Context->getSourceManager();
 
@@ -90,20 +101,52 @@
   return;
 
 bool IsVariable = isa(Arg);
+bool IsRValueReferenceArg = false;
+bool IsTemplateInstantiation = false;
+StringRef FuncName;
+QualType ParmType;
 const auto *Var =
 IsVariable ? dyn_cast(Arg)->getDecl() : nullptr;
-auto Diag = diag(FileMoveRange.getBegin(),
- "std::move of the %select{|const }0"
- "%select{expression|variable %4}1 "
- "%select{|of the trivially-copyable type %5 }2"
- "has no effect; remove std::move()"
- "%select{| or make the variable non-const}3")
-<< IsConstArg << IsVariable << IsTriviallyCopyable
-<< (IsConstArg && IsVariable && !IsTriviallyCopyable) << Var
-<< Arg->getType();
+
+if (ReceivingExpr &&
+InvocationParm->getOriginalType()->isRValueReferenceType() &&
+!ReceivingExpr->getType()->isRecordType() && Arg->isLValue()) {
+  IsRValueReferenceArg = true;
+  if (Arg->getType()->isBuiltinType()) {
+const auto *ReceivingCallExpr = dyn_cast(ReceivingExpr);
+if (!ReceivingCallExpr)
+  return;
+IsTemplateInstantiation =
+ReceivingCallExpr->getDirectCallee()->isTemplateInstantiation();
+FuncName = ReceivingCallExpr->getDirectCallee()->getName();
+ParmType = InvocationParm->getOriginalType();
+  }
+}
+
+auto Diag =
+diag(FileMoveRange.getBegin(),
+ 

[PATCH] D108370: [clang-tidy] Fix wrong FixIt about union in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added reviewers: aaron.ballman, bkramer, alexfh, malcolm.parsons, MTC, 
steven.zhang.
Herald added subscribers: shchenz, kbarton, xazax.hun, nemanjai.
Sockke requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.

I can only initialize one member variable of the same level in the union. The 
case of anonymous records with multiple levels of nesting like the following 
also needs to meet this rule. The original logic is to horizontally obtain all 
the member variables in a record that need to be initialized and then filter to 
the variables that need to be fixed. Obviously, it is impossible to correctly 
initialize the desired variables according to the nesting relationship.

See Example 3 in class.union 

  union U {
U() {}
int x;  // int x{};
union {
  int k;  // int k{};  <==  wrong fix
};
union {
  int z;  // int z{};  <== wrong fix
  int y;
};
  };


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D108370

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -516,3 +516,34 @@
 
 PositiveDefaultConstructorOutOfDecl::PositiveDefaultConstructorOutOfDecl() = 
default;
 // CHECK-MESSAGES: :[[@LINE-1]]:1: warning: constructor does not initialize 
these fields: F
+
+union U1 {
+  U1() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: union constructor should 
initialize one of these fields: X, K, Z, Y
+  int X;
+  // CHECK-FIXES: int X{};
+  union {
+int K;
+  };
+  union {
+int Z;
+int Y;
+  };
+};
+
+union U2 {
+  U2() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: union constructor should 
initialize one of these fields: B, C, A
+  struct {
+int B;
+// CHECK-FIXES: int B{};
+union {
+  struct {
+PositiveMultipleConstructors Value;
+  };
+  int C;
+  // CHECK-FIXES: int C{};
+};
+  };
+  int A;
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -44,6 +44,23 @@
   }
 }
 
+template 
+void forEachFieldWithFilter(const RecordDecl &Record, const T &Fields,
+bool &AnyMemberHasInitPerUnion, Func &&Fn) {
+  for (const FieldDecl *F : Fields) {
+if (F->isAnonymousStructOrUnion()) {
+  if (const CXXRecordDecl *R = F->getType()->getAsCXXRecordDecl()) {
+AnyMemberHasInitPerUnion = false;
+forEachFieldWithFilter(*R, R->fields(), AnyMemberHasInitPerUnion, Fn);
+  }
+} else {
+  Fn(F);
+}
+if (Record.isUnion() && AnyMemberHasInitPerUnion)
+  break;
+  }
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -461,8 +478,9 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  SmallPtrSet UnionsSeen;
-  forEachField(ClassDecl, OrderedFields, [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))
   return;
 // Don't suggest fixes for enums because we don't know a good default.
@@ -471,8 +489,8 @@
 if (F->getType()->isEnumeralType() ||
 (!getLangOpts().CPlusPlus20 && F->isBitField()))
   return;
-if (!F->getParent()->isUnion() || UnionsSeen.insert(F->getParent()).second)
-  FieldsToFix.insert(F);
+FieldsToFix.insert(F);
+AnyMemberHasInitPerUnion = true;
   });
   if (FieldsToFix.empty())
 return;


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -516,3 +516,34 @@
 
 PositiveDefaultConstructorOutOfDecl::PositiveDefaultConstructorOutOfDecl() = default;
 // CHECK-MESSAGES: :[[@LINE-1]]:1: warning: constructor does not initialize these fields: F
+
+union U1 {
+  U1() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]

[PATCH] D107450: [clang-tidy] Fix wrong FIxIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 367474.
Sockke marked 2 inline comments as done.
Sockke added a comment.
Herald added a subscriber: jfb.

Thanks for your reply @Quuxplusone. I have updated!


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107450/new/

https://reviews.llvm.org/D107450

Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -246,3 +246,27 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&) {}
+void testInt() {
+  int a = 10;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect; consider changing showInt's parameter from 'int &&' to 'const int &'
+}
+template 
+void forwardToShowInt(T &&t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect
+}
+
+struct Tmp {};
+void showTmp(Tmp &&) {}
+void testTmp() {
+  Tmp t;
+  showTmp(std::move(t));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect; consider changing showTmp's parameter from 'Tmp &&' to 'const Tmp &'
+}
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_MOVECONSTANTARGUMENTCHECK_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -36,6 +37,7 @@
 
 private:
   const bool CheckTriviallyCopyableMove;
+  llvm::DenseSet HasCheckedMoveSet;
 };
 
 } // namespace performance
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
@@ -50,7 +50,9 @@
   Finder->addMatcher(
   invocation(forEachArgumentWithParam(
  MoveCallMatcher,
- parmVarDecl(hasType(references(isConstQualified())
+ parmVarDecl(anyOf(hasType(references(isConstQualified())),
+   hasType(rValueReferenceType(
+ .bind("invocation-parm")))
   .bind("receiving-expr"),
   this);
 }
@@ -58,6 +60,15 @@
 void MoveConstArgCheck::check(const MatchFinder::MatchResult &Result) {
   const auto *CallMove = Result.Nodes.getNodeAs("call-move");
   const auto *ReceivingExpr = Result.Nodes.getNodeAs("receiving-expr");
+  const auto *InvocationParm =
+  Result.Nodes.getNodeAs("invocation-parm");
+
+  if (!ReceivingExpr && HasCheckedMoveSet.contains(CallMove))
+return;
+
+  if (ReceivingExpr)
+HasCheckedMoveSet.insert(CallMove);
+
   const Expr *Arg = CallMove->getArg(0);
   SourceManager &SM = Result.Context->getSourceManager();
 
@@ -90,20 +101,57 @@
   return;
 
 bool IsVariable = isa(Arg);
+bool IsRValueReferenceArg = false;
+bool IsTemplateInstantiation = false;
+StringRef FuncName;
+QualType ParmType;
+std::string ExpectParmTypeName;
 const auto *Var =
 IsVariable ? dyn_cast(Arg)->getDecl() : nullptr;
+
+if (ReceivingExpr &&
+InvocationParm->getOriginalType()->isRValueReferenceType() &&
+!ReceivingExpr->getType()->isRecordType() && Arg->isLValue()) {
+  IsRValueReferenceArg = true;
+  const auto *ReceivingCallExpr = dyn_cast(ReceivingExpr);
+  if (!ReceivingCallExpr)
+return;
+  IsTemplateInstantiation =
+  ReceivingCallExpr->getDirectCallee()->isTemplateInstantiation();
+  FuncName = ReceivingCallExpr->getDirectCallee()->getName();
+  ParmType = InvocationParm->getOriginalType();
+  if (Arg->getType()->isRecordType()) {
+if (const CXXRecordDecl *R = Arg->getType()->getAsCXXRecordDecl())
+  ExpectParmTypeName = R->getNameAsString();
+  } else
+ExpectParmTypeName =
+Arg->getType().getAtomicUnqualifiedType().getAsString();
+}
+
 auto Diag = diag(FileMoveRange.getBegin(),
  "std::move of the %select{|const }0"
- "%select{expression|variable %4}1 "
- "%select{|o

[PATCH] D105973: [ASTMatchers] NFC: Fix the annotation.

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added reviewers: ymandel, aaron.ballman, MTC.
Sockke requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

The annotation about ignoringImpCasts is wrong, which will cause 
misunderstanding. Fix it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D105973

Files:
  clang/include/clang/ASTMatchers/ASTMatchers.h


Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -913,7 +913,7 @@
 ///varDecl(hasInitializer(integerLiteral()))
 ///varDecl(hasInitializer(declRefExpr()))
 /// \endcode
-/// only match the declarations for b, c, and d.
+/// only match the declarations for a.
 AST_MATCHER_P(Expr, ignoringImpCasts,
   internal::Matcher, InnerMatcher) {
   return InnerMatcher.matches(*Node.IgnoreImpCasts(), Finder, Builder);


Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -913,7 +913,7 @@
 ///varDecl(hasInitializer(integerLiteral()))
 ///varDecl(hasInitializer(declRefExpr()))
 /// \endcode
-/// only match the declarations for b, c, and d.
+/// only match the declarations for a.
 AST_MATCHER_P(Expr, ignoringImpCasts,
   internal::Matcher, InnerMatcher) {
   return InnerMatcher.matches(*Node.IgnoreImpCasts(), Finder, Builder);
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[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke added a comment.
Herald added a subscriber: carlosgalvezp.

Kindly ping. @whisperity, @aaron.ballman, @Quuxplusone


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[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 382632.
Sockke added a comment.

Update!


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Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -246,3 +246,40 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&v) {}
+void showInt(int v1, int &&v2) {}
+void testInt() {
+  int a = 10;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-6]]:20: note: consider changing the 1st parameter of showInt from 'int &&' to 'const int &'
+  showInt(int());
+  showInt(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-9]]:28: note: consider changing the 2nd parameter of showInt from 'int &&' to 'const int &'
+}
+template 
+void forwardToShowInt(T && t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+}
+
+struct Tmp {};
+void showTmp(Tmp &&v) {}
+void testTmp() {
+  Tmp t;
+  showTmp(std::move(t));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 't' of the trivially-copyable type 'Tmp' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-5]]:20: note: consider changing the 1st parameter of showTmp from 'Tmp &&' to 'const Tmp &'
+}
+
+void showA(A && v) {}
+void testA() {
+  A a;
+  showA(std::move(a));
+}
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -113,6 +113,10 @@
 Changes in existing checks
 ^^
 
+- Improved :doc:`performance-move-const-arg` check.
+
+  Removed fixes for that a trivially-copyable object wrapped by std::move is passed to the function with rvalue reference parameters because the code was broken by removing std::move.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_MOVECONSTANTARGUMENTCHECK_H
 
 #include "../ClangTidyCheck.h"
+#include "llvm/ADT/DenseSet.h"
 
 namespace clang {
 namespace tidy {
@@ -36,6 +37,7 @@
 
 private:
   const bool CheckTriviallyCopyableMove;
+  llvm::DenseSet AlreadyCheckedMoves;
 };
 
 } // namespace performance
Index: clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
===
--- clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
+++ clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
@@ -50,7 +50,9 @@
   Finder->addMatcher(
   invocation(forEachArgumentWithParam(
  MoveCallMatcher,
- parmVarDecl(hasType(references(isConstQualified())
+ parmVarDecl(anyOf(hasType(references(isConstQualified())),
+   hasType(rValueReferenceType(
+ .bind("invocation-parm")))
   .bind("receiving-expr"),
   this);
 }
@@ -58,6 +60,15 @@
 void MoveConstArgCheck::check(const MatchFinder::MatchResult &Result) {
   const auto *CallMove = Result.Nodes.getNodeAs("call-move");
   const auto *ReceivingExpr = Result.Nodes.getNodeAs("receiving-expr");
+  const auto *InvocationParm =
+  Result.Nodes.getNodeAs("invocation-parm");
+
+  if (!ReceivingExpr && AlreadyCheckedMoves.contains(CallMove))
+return;
+
+  if (ReceivingExpr)
+AlreadyCheckedMoves.insert(CallMove);
+
   const Expr *Arg = CallMove->getArg(0);
   SourceManager &SM = Result.Context->getSourceManager();
 
@@ -90,20 +101,53 @@
   return;
 
 bool IsVariable = isa(Arg);
+bool IsRValueReferenceArg = false;
 const auto *Var =
 IsVariable ? dyn_cast(Arg)->getDecl() : nullptr;
-auto Diag = diag(FileMoveRange.getBegin(),
-

[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke marked 2 inline comments as done.
Sockke added a comment.

In D107450#3087103 , @whisperity 
wrote:

> I think this is becoming okay and looks safe enough. I can't really grasp 
> what `HasCheckedMoveSet` means, and how it synergises with storing 
> `CallExpr`s so maybe a better name should be added. Do you mean 
> `AlreadyCheckedMoves`? When is it possible that the same `CallExpr` of 
> `std::move` will be matched multiple times?

Yes, you're right!


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[PATCH] D113148: Add new clang-tidy check for string_view(nullptr)

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

This seems to be an existing check. Have you compared it with 
**bugprone-string-constructor**?


Repository:
  rG LLVM Github Monorepo

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[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 384706.
Sockke added a comment.

I improved the logic of judgments needing to report suggesting notes in some 
cases. And more tests were added here.


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Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -246,3 +246,87 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&v);
+void showInt(int v1, int &&v2);
+void showPointer(const char *&&s);
+void showPointer2(const char *const &&s);
+void showTriviallyCopyable(TriviallyCopyable &&obj);
+void showTriviallyCopyablePointer(const TriviallyCopyable *&&obj);
+void testFunctions() {
+  int a = 10;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-10]]:20: note: consider changing the 1st parameter of showInt from 'int &&' to 'const int &'
+  showInt(int());
+  showInt(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-13]]:28: note: consider changing the 2nd parameter of showInt from 'int &&' to 'const int &'
+  const char* s = "";
+  showPointer(std::move(s));
+  // CHECK-MESSAGES: :[[@LINE-1]]:15: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-16]]:32: note: consider changing the 1st parameter of showPointer from 'const char *&&' to 'const char *'
+  showPointer2(std::move(s)); 
+  // CHECK-MESSAGES: :[[@LINE-1]]:16: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-18]]:39: note: consider changing the 1st parameter of showPointer2 from 'const char *const &&' to 'const char *const'
+  TriviallyCopyable *obj = new TriviallyCopyable();
+  showTriviallyCopyable(std::move(*obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: std::move of the expression of the trivially-copyable type 'TriviallyCopyable' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-21]]:48: note: consider changing the 1st parameter of showTriviallyCopyable from 'TriviallyCopyable &&' to 'const TriviallyCopyable &'
+  showTriviallyCopyablePointer(std::move(obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:32: warning: std::move of the variable 'obj' of the trivially-copyable type 'TriviallyCopyable *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-23]]:62: note: consider changing the 1st parameter of showTriviallyCopyablePointer from 'const TriviallyCopyable *&&' to 'const TriviallyCopyable *'
+}
+template 
+void forwardToShowInt(T && t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+}
+
+struct Tmp {
+  Tmp();
+  Tmp(int &&a);
+  Tmp(int v1, int &&a);
+  Tmp(const char *&&s);
+  Tmp(TriviallyCopyable&& obj);
+  Tmp(const TriviallyCopyable *&&obj);
+  void showTmp(TriviallyCopyable&& t);
+  static void showTmpStatic(TriviallyCopyable&& t);
+};
+void testMethods() {
+  Tmp t;
+  int a = 10;
+  Tmp t1(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-13]]:13: note: consider changing the 1st parameter of Tmp from 'int &&' to 'const int &'
+  Tmp t2(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-15]]:21: note: consider changing the 2nd parameter of Tmp from 'int &&' to 'const int &'
+  const char* s = "";
+  Tmp t3(std::move(s));
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-18]]:21: note: consider changing the 1st parameter of Tmp from 'const char *&&' to 'const char *'
+  TriviallyCopyable *obj = new TriviallyCo

[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 384728.
Sockke added a comment.

In addition, the splicing logics of "FunctionName" and "ExpectParmTypeName" 
were improved.


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Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -246,3 +246,87 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&v);
+void showInt(int v1, int &&v2);
+void showPointer(const char *&&s);
+void showPointer2(const char *const &&s);
+void showTriviallyCopyable(TriviallyCopyable &&obj);
+void showTriviallyCopyablePointer(const TriviallyCopyable *&&obj);
+void testFunctions() {
+  int a = 10;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-10]]:20: note: consider changing the 1st parameter of showInt from 'int &&' to 'const int &'
+  showInt(int());
+  showInt(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-13]]:28: note: consider changing the 2nd parameter of showInt from 'int &&' to 'const int &'
+  const char* s = "";
+  showPointer(std::move(s));
+  // CHECK-MESSAGES: :[[@LINE-1]]:15: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-16]]:32: note: consider changing the 1st parameter of showPointer from 'const char *&&' to 'const char *'
+  showPointer2(std::move(s)); 
+  // CHECK-MESSAGES: :[[@LINE-1]]:16: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-18]]:39: note: consider changing the 1st parameter of showPointer2 from 'const char *const &&' to 'const char *const'
+  TriviallyCopyable *obj = new TriviallyCopyable();
+  showTriviallyCopyable(std::move(*obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: std::move of the expression of the trivially-copyable type 'TriviallyCopyable' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-21]]:48: note: consider changing the 1st parameter of showTriviallyCopyable from 'TriviallyCopyable &&' to 'const TriviallyCopyable &'
+  showTriviallyCopyablePointer(std::move(obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:32: warning: std::move of the variable 'obj' of the trivially-copyable type 'TriviallyCopyable *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-23]]:62: note: consider changing the 1st parameter of showTriviallyCopyablePointer from 'const TriviallyCopyable *&&' to 'const TriviallyCopyable *'
+}
+template 
+void forwardToShowInt(T && t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+}
+
+struct Tmp {
+  Tmp();
+  Tmp(int &&a);
+  Tmp(int v1, int &&a);
+  Tmp(const char *&&s);
+  Tmp(TriviallyCopyable&& obj);
+  Tmp(const TriviallyCopyable *&&obj);
+  void showTmp(TriviallyCopyable&& t);
+  static void showTmpStatic(TriviallyCopyable&& t);
+};
+void testMethods() {
+  Tmp t;
+  int a = 10;
+  Tmp t1(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-13]]:13: note: consider changing the 1st parameter of Tmp from 'int &&' to 'const int &'
+  Tmp t2(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-15]]:21: note: consider changing the 2nd parameter of Tmp from 'int &&' to 'const int &'
+  const char* s = "";
+  Tmp t3(std::move(s));
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-18]]:21: note: consider changing the 1st parameter of Tmp from 'const char *&&' to 'const char *'
+  TriviallyCopyable *obj = new TriviallyCopyable();
+  Tmp t4(std::

[PATCH] D113148: Add new clang-tidy check for string_view(nullptr)

[gehry via Phabricator via cfe-commits]

Sockke added subscribers: whisperity, aaron.ballman.
Sockke added a comment.

In D113148#3108705 , @CJ-Johnson 
wrote:

> In D113148#3107897 , @Sockke wrote:
>
>> This seems to be an existing check. Have you compared it with 
>> **bugprone-string-constructor**?
>
> Thanks for the suggestion! From what I can tell, bugprone-string-constructor 
> check only has warnings and does not provide fixes in most cases. The goal of 
> bugprone-stringview-nullptr is to robustly enumerate the many cases that it 
> cares about and provide fixes. For that reason, I think making it a separate 
> check is best.

Yes, But i think that improving existing check is the best way. Because 
improving bugprone-string-construct in a new check may make developers confused 
and cause redundant overlap.
Let's see if @aaron.ballman or @whisperity has any comments?


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[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Kindly ping. @whisperity


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[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

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Sockke added a comment.

Kindly ping. @whisperity


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[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

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Sockke added a comment.

Hi, Could anyone please review this diff? @whisperity, @aaron.ballman


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[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

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Sockke added a comment.

In D107450#3155019 , @whisperity 
wrote:

> This generally looks fine for me, but I'd rather have other people who are 
> more knowledgeable about the standard's intricacies looked at it too.
>
> AFAIK Aaron is busy this week and the next (?) due to C++ Committee meetings, 
> or something like that. And I bet after such meetings everyone would take a 
> few more days off from looking at C++ stuff.

Ok, that sounds great, thanks a lot!


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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

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Sockke added a comment.

Hi, @LegalizeAdulthood, are you okay with the way this has progressed?


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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping @LegalizeAdulthood.


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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 455516.
Sockke added a comment.

Rebased.


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
@@ -552,3 +552,30 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
+
+struct S3 {
+  S3() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: constructor does not initialize these fields: A [cppcoreguidelines-pro-type-member-init]
+  int A;
+  // CHECK-FIXES: int A{};
+  union {
+int B;
+int C = 0;
+  };
+};
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -120,6 +120,11 @@
   ` check. Partial
   support for C++14 signal handler rules was added. Bug report generation was
   improved.
+
+- Fixed a false positive in :doc:`cppcoreguidelines-pro-type-member-init
+  ` when warnings
+  would be emitted for uninitialized members of an anonymous union despite
+  there being an initializer for one of the other members.
   
 - Improved `modernize-use-emplace `_ check.
 
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,20 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion()) {
+  AnyMemberHasInitPerUnion = true;
+  removeFieldInitialized(F, FieldsToInit);
+}
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +455,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +496,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = false;
   forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
  AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))
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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

This revision was not accepted when it landed; it landed in state "Needs 
Review".
This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG2d8e91a5d359: [clang-tidy] Ignore other members in a union 
if any member of it is initialized… (authored by Sockke).

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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/pro-type-member-init.cpp
@@ -552,3 +552,30 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
+
+struct S3 {
+  S3() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: constructor does not initialize these fields: A [cppcoreguidelines-pro-type-member-init]
+  int A;
+  // CHECK-FIXES: int A{};
+  union {
+int B;
+int C = 0;
+  };
+};
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -120,6 +120,11 @@
   ` check. Partial
   support for C++14 signal handler rules was added. Bug report generation was
   improved.
+
+- Fixed a false positive in :doc:`cppcoreguidelines-pro-type-member-init
+  ` when warnings
+  would be emitted for uninitialized members of an anonymous union despite
+  there being an initializer for one of the other members.
   
 - Improved `modernize-use-emplace `_ check.
 
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,20 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion()) {
+  AnyMemberHasInitPerUnion = true;
+  removeFieldInitialized(F, FieldsToInit);
+}
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +455,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +496,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = f

[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

This patch has been around for a long time, I have added the release notes. 
There are users waiting for this fix and I committed it myself first.
@LegalizeAdulthood I'm looking forward to your follow-up reply.


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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 484210.
Sockke added a comment.

Added comments


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,6 +1,16 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- 
-fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t 
-- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
+// Header file error causes stl container variable to be invalid int vardecl
+#include "unknown.h" 
+// CHECK-MESSAGES: :[[@LINE-1]]:10: error: 'unknown.h' file not found 
[clang-diagnostic-error]
+
+namespace std {
+template 
+struct vector {
+  vector();
+};
+
 // Ensure that function declarations are not changed.
 void some_func(int x, double d, bool b, const char *p);
 
@@ -124,3 +134,13 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not 
initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized 
[cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+
+  // The stl object has been initialized
+  std::vector arr;
+  // CHECK-FIXES-NOT: {{^}}  std::vector arr = 0;{{$}}
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,9 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  // Header file error causes the stl container variable to be an invalid int 
vardecl
+  if (MatchedDecl->isInvalidDecl())
+return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,6 +1,16 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- -fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t -- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
+// Header file error causes stl container variable to be invalid int vardecl
+#include "unknown.h" 
+// CHECK-MESSAGES: :[[@LINE-1]]:10: error: 'unknown.h' file not found [clang-diagnostic-error]
+
+namespace std {
+template 
+struct vector {
+  vector();
+};
+
 // Ensure that function declarations are not changed.
 void some_func(int x, double d, bool b, const char *p);
 
@@ -124,3 +134,13 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized [cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+
+  // The stl object has been initialized
+  std::vector arr;
+  // CHECK-FIXES-NOT: {{^}}  std::vector arr = 0;{{$}}
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,9 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  // Header file error causes the stl container variable to be an invalid int vardecl
+  if (MatchedDecl->isInvalidDecl())
+return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //
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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 484765.
Sockke added a comment.

Improved the test file.


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Files:
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clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- 
-fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t 
-- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
 // Ensure that function declarations are not changed.
@@ -124,3 +124,13 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not 
initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized 
[cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+
+  UnknownType b;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: error: unknown type name 'UnknownType' 
[clang-diagnostic-error]
+  // CHECK-FIXES-NOT: {{^}}  UnknownType b = 0;{{$}}
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,10 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  // Clang diagnostic error may cause the variable to be an invalid int vardecl
+  if (MatchedDecl->isInvalidDecl())
+return;
+
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- -fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t -- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
 // Ensure that function declarations are not changed.
@@ -124,3 +124,13 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized [cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+
+  UnknownType b;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: error: unknown type name 'UnknownType' [clang-diagnostic-error]
+  // CHECK-FIXES-NOT: {{^}}  UnknownType b = 0;{{$}}
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,10 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  // Clang diagnostic error may cause the variable to be an invalid int vardecl
+  if (MatchedDecl->isInvalidDecl())
+return;
+
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //
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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke marked 6 inline comments as done.
Sockke added a comment.

Mark comments.


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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Hi, Could anyone please review this diff?


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[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 438295.
Sockke added a comment.

rebased.


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -552,3 +552,19 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), 
FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,18 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion())
+  AnyMemberHasInitPerUnion = true;
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +453,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +494,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = false;
   forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
  AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -552,3 +552,19 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all memb

[PATCH] D116593: Fix `performance-unnecessary-value-param` for template specialization

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 432520.
Sockke added a comment.

Rebased and added '-fno-delayed-template-parsing' option for the test file.


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Files:
  clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
  
clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s performance-unnecessary-value-param %t
+// RUN: %check_clang_tidy %s performance-unnecessary-value-param %t -- -- -fno-delayed-template-parsing
 
 // CHECK-FIXES: #include 
 
@@ -109,7 +109,7 @@
 
 template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType S, T V) {
   // CHECK-MESSAGES: [[@LINE-1]]:90: warning: the const qualified parameter 'S'
-  // CHECK-FIXES: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
+  // CHECK-FIXES-NOT: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
 }
 
 void instantiated() {
@@ -381,3 +381,24 @@
   // CHECK-FIXES: void templateFunction(ExpensiveToCopyType E) {
   E.constReference();
 }
+
+template 
+T templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:54: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: T templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return T();
+}
+
+template <>
+bool templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:57: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: bool templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return true;
+}
+
+template <>
+int templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:56: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: int templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return 0;
+}
Index: clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
@@ -69,7 +69,7 @@
 
 template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType S, T V) {
   // CHECK-MESSAGES: [[@LINE-1]]:90: warning: the const qualified parameter 'S'
-  // CHECK-FIXES: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
+  // CHECK-FIXES-NOT: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
 }
 
 void instantiated() {
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -202,6 +202,10 @@
   ` to simplify expressions
   using DeMorgan's Theorem.
 
+- Fixed a crash in :doc:`performance-unnecessary-value-param
+  ` when the specialization
+  template has an unnecessary value paramter. Removed the fix for a template.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
===
--- clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
+++ clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
@@ -51,18 +51,6 @@
   return Matches.empty();
 }
 
-bool isExplicitTemplateSpecialization(const FunctionDecl &Function) {
-  if (const auto *SpecializationInfo = Function.getTemplateSpecializationInfo())
-if (SpecializationInfo->getTemplateSpecializationKind() ==
-TSK_ExplicitSpecialization)
-  return true;
-  if (const auto *Method = llvm::dyn_cast(&Function))
-if (Method->getTemplatedKind() == FunctionDecl::TK_MemberSpecialization &&
-Method->getMemberSpecializationInfo()->isExplicitSpecialization())
-  return true;
-  return false;
-}
-
 } // namespace
 
 UnnecessaryValueParamCheck::UnnecessaryValueParamCheck(
@@ -147,11 +135,12 @@
   // 2. the function is virtual as it might break overrides
   // 3. the function is referenced outside of a call expression within the
   //compilation unit as the signature change could introduce build errors.
-  // 4. the function is an explicit template specialization.
+  // 4. the function is a primary te

[PATCH] D123924: [clang-apply-replacements] Added an option to ignore insert conflict.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 432522.
Sockke added a comment.

rebased.


CHANGES SINCE LAST ACTION
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Files:
  
clang-tools-extra/clang-apply-replacements/include/clang-apply-replacements/Tooling/ApplyReplacements.h
  clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
  clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
  clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
  clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
  clang/include/clang/Tooling/Refactoring/AtomicChange.h

Index: clang/include/clang/Tooling/Refactoring/AtomicChange.h
===
--- clang/include/clang/Tooling/Refactoring/AtomicChange.h
+++ clang/include/clang/Tooling/Refactoring/AtomicChange.h
@@ -116,6 +116,8 @@
   /// Returns a const reference to existing replacements.
   const Replacements &getReplacements() const { return Replaces; }
 
+  Replacements &getReplacements() { return Replaces; }
+
   llvm::ArrayRef getInsertedHeaders() const {
 return InsertedHeaders;
   }
Index: clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
@@ -0,0 +1,5 @@
+// RUN: mkdir -p %T/Inputs/ignore-conflict
+// RUN: grep -Ev "// *[A-Z-]+:" %S/Inputs/ignore-conflict/ignore-conflict.cpp > %T/Inputs/ignore-conflict/ignore-conflict.cpp
+// RUN: sed "s#\$(path)#%/T/Inputs/ignore-conflict#" %S/Inputs/ignore-conflict/file1.yaml > %T/Inputs/ignore-conflict/file1.yaml
+// RUN: clang-apply-replacements --ignore-insert-conflict %T/Inputs/ignore-conflict
+// RUN: FileCheck -input-file=%T/Inputs/ignore-conflict/ignore-conflict.cpp %S/Inputs/ignore-conflict/ignore-conflict.cpp
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
@@ -0,0 +1,4 @@
+class MyType {};
+// CHECK: #include 
+// CHECK-NEXT: #include 
+// CEHCK-NEXT: class MyType {};
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
@@ -0,0 +1,24 @@
+---
+MainSourceFile: ignore-conflict.cpp
+Diagnostics:
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+...
Index: clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
===
--- clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+++ clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
@@ -180,6 +180,7 @@
 def apply_fixes(args, clang_apply_replacements_binary, tmpdir):
   """Calls clang-apply-fixes on a given directory."""
   invocation = [clang_apply_replacements_binary]
+  invocation.append('-ignore-insert-conflict')
   if args.format:
 invocation.append('-format')
   if args.style:
Index: clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
===
--- clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
+++ clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
@@ -42,6 +42,11 @@
  "merging/replacing."),
 cl::init(false), cl::cat(ReplacementCategory));
 
+static cl::opt IgnoreInsertConflict(
+"ignore-insert-conflict",
+cl::desc("Ignore insert conflict and keep running to fix."),
+cl::init(false), cl::cat(ReplacementCategory));
+
 static cl::opt DoFormat(
 "format",
 cl::desc("Enable formatting of code changed by applying replacements.\n"
@@ -131,7 +136,7 @@
   SourceManager SM(Diagnostics, Files);
 
   FileToChangesMap Changes;
-  if (!mergeAndDeduplicate(TURs, TUDs, Changes, SM))
+  if (!mergeAndDeduplicate(TURs, TUDs, Changes,

[PATCH] D116593: Fix `performance-unnecessary-value-param` for template specialization

[gehry via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGc98b3a8cd985: Fix `performance-unnecessary-value-param` for 
template specialization (authored by Sockke).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
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Files:
  clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  
clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
  
clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param.cpp
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s performance-unnecessary-value-param %t
+// RUN: %check_clang_tidy %s performance-unnecessary-value-param %t -- -- -fno-delayed-template-parsing
 
 // CHECK-FIXES: #include 
 
@@ -109,7 +109,7 @@
 
 template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType S, T V) {
   // CHECK-MESSAGES: [[@LINE-1]]:90: warning: the const qualified parameter 'S'
-  // CHECK-FIXES: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
+  // CHECK-FIXES-NOT: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
 }
 
 void instantiated() {
@@ -381,3 +381,24 @@
   // CHECK-FIXES: void templateFunction(ExpensiveToCopyType E) {
   E.constReference();
 }
+
+template 
+T templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:54: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: T templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return T();
+}
+
+template <>
+bool templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:57: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: bool templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return true;
+}
+
+template <>
+int templateSpecializationFunction(ExpensiveToCopyType E) {
+  // CHECK-MESSAGES: [[@LINE-1]]:56: warning: the parameter 'E' is copied
+  // CHECK-FIXES-NOT: int templateSpecializationFunction(const ExpensiveToCopyType& E) {
+  return 0;
+}
Index: clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-unnecessary-value-param-delayed.cpp
@@ -69,7 +69,7 @@
 
 template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType S, T V) {
   // CHECK-MESSAGES: [[@LINE-1]]:90: warning: the const qualified parameter 'S'
-  // CHECK-FIXES: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
+  // CHECK-FIXES-NOT: template  void templateWithNonTemplatizedParameter(const ExpensiveToCopyType& S, T V) {
 }
 
 void instantiated() {
Index: clang-tools-extra/docs/ReleaseNotes.rst
===
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -202,6 +202,10 @@
   ` to simplify expressions
   using DeMorgan's Theorem.
 
+- Fixed a crash in :doc:`performance-unnecessary-value-param
+  ` when the specialization
+  template has an unnecessary value paramter. Removed the fix for a template.
+
 Removed checks
 ^^
 
Index: clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
===
--- clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
+++ clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp
@@ -51,18 +51,6 @@
   return Matches.empty();
 }
 
-bool isExplicitTemplateSpecialization(const FunctionDecl &Function) {
-  if (const auto *SpecializationInfo = Function.getTemplateSpecializationInfo())
-if (SpecializationInfo->getTemplateSpecializationKind() ==
-TSK_ExplicitSpecialization)
-  return true;
-  if (const auto *Method = llvm::dyn_cast(&Function))
-if (Method->getTemplatedKind() == FunctionDecl::TK_MemberSpecialization &&
-Method->getMemberSpecializationInfo()->isExplicitSpecialization())
-  return true;
-  return false;
-}
-
 } // namespace
 
 UnnecessaryValueParamCheck::UnnecessaryValueParamCheck(
@@ -147,11 +135,12 @@
   // 2. the function is virtual as it might break overrides
   // 3. the function is referenced outside of a call expression within the
   //compilation unit as the signature change could introduce build errors.
-  // 4

[PATCH] D123924: [clang-apply-replacements] Added an option to ignore insert conflict.

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 432829.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D123924/new/

https://reviews.llvm.org/D123924

Files:
  
clang-tools-extra/clang-apply-replacements/include/clang-apply-replacements/Tooling/ApplyReplacements.h
  clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
  clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
  clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
  clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
  clang/include/clang/Tooling/Refactoring/AtomicChange.h

Index: clang/include/clang/Tooling/Refactoring/AtomicChange.h
===
--- clang/include/clang/Tooling/Refactoring/AtomicChange.h
+++ clang/include/clang/Tooling/Refactoring/AtomicChange.h
@@ -116,6 +116,8 @@
   /// Returns a const reference to existing replacements.
   const Replacements &getReplacements() const { return Replaces; }
 
+  Replacements &getReplacements() { return Replaces; }
+
   llvm::ArrayRef getInsertedHeaders() const {
 return InsertedHeaders;
   }
Index: clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
@@ -0,0 +1,5 @@
+// RUN: mkdir -p %T/Inputs/ignore-conflict
+// RUN: grep -Ev "// *[A-Z-]+:" %S/Inputs/ignore-conflict/ignore-conflict.cpp > %T/Inputs/ignore-conflict/ignore-conflict.cpp
+// RUN: sed "s#\$(path)#%/T/Inputs/ignore-conflict#" %S/Inputs/ignore-conflict/file1.yaml > %T/Inputs/ignore-conflict/file1.yaml
+// RUN: clang-apply-replacements --ignore-insert-conflict %T/Inputs/ignore-conflict
+// RUN: FileCheck -input-file=%T/Inputs/ignore-conflict/ignore-conflict.cpp %S/Inputs/ignore-conflict/ignore-conflict.cpp
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
@@ -0,0 +1,4 @@
+class MyType {};
+// CHECK: #include 
+// CHECK-NEXT: #include 
+// CEHCK-NEXT: class MyType {};
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
@@ -0,0 +1,24 @@
+---
+MainSourceFile: ignore-conflict.cpp
+Diagnostics:
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+...
Index: clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
===
--- clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+++ clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
@@ -180,6 +180,7 @@
 def apply_fixes(args, clang_apply_replacements_binary, tmpdir):
   """Calls clang-apply-fixes on a given directory."""
   invocation = [clang_apply_replacements_binary]
+  invocation.append('-ignore-insert-conflict')
   if args.format:
 invocation.append('-format')
   if args.style:
Index: clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
===
--- clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
+++ clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
@@ -42,6 +42,11 @@
  "merging/replacing."),
 cl::init(false), cl::cat(ReplacementCategory));
 
+static cl::opt IgnoreInsertConflict(
+"ignore-insert-conflict",
+cl::desc("Ignore insert conflict and keep running to fix."),
+cl::init(false), cl::cat(ReplacementCategory));
+
 static cl::opt DoFormat(
 "format",
 cl::desc("Enable formatting of code changed by applying replacements.\n"
@@ -131,7 +136,7 @@
   SourceManager SM(Diagnostics, Files);
 
   FileToChangesMap Changes;
-  if (!mergeAndDeduplicate(TURs, TUDs, Changes, SM))
+  if (!mergeAndDeduplicate(TURs, TUDs, Changes, SM, IgnoreInsertConflict))
 re

[PATCH] D123924: [clang-apply-replacements] Added an option to ignore insert conflict.

[gehry via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG3f3a235aa2e6: [clang-apply-replacements] Added an option to 
ignore insert conflict. (authored by Sockke).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D123924/new/

https://reviews.llvm.org/D123924

Files:
  
clang-tools-extra/clang-apply-replacements/include/clang-apply-replacements/Tooling/ApplyReplacements.h
  clang-tools-extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp
  clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
  clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
  
clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
  clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
  clang/include/clang/Tooling/Refactoring/AtomicChange.h

Index: clang/include/clang/Tooling/Refactoring/AtomicChange.h
===
--- clang/include/clang/Tooling/Refactoring/AtomicChange.h
+++ clang/include/clang/Tooling/Refactoring/AtomicChange.h
@@ -116,6 +116,8 @@
   /// Returns a const reference to existing replacements.
   const Replacements &getReplacements() const { return Replaces; }
 
+  Replacements &getReplacements() { return Replaces; }
+
   llvm::ArrayRef getInsertedHeaders() const {
 return InsertedHeaders;
   }
Index: clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/ignore-conflict.cpp
@@ -0,0 +1,5 @@
+// RUN: mkdir -p %T/Inputs/ignore-conflict
+// RUN: grep -Ev "// *[A-Z-]+:" %S/Inputs/ignore-conflict/ignore-conflict.cpp > %T/Inputs/ignore-conflict/ignore-conflict.cpp
+// RUN: sed "s#\$(path)#%/T/Inputs/ignore-conflict#" %S/Inputs/ignore-conflict/file1.yaml > %T/Inputs/ignore-conflict/file1.yaml
+// RUN: clang-apply-replacements --ignore-insert-conflict %T/Inputs/ignore-conflict
+// RUN: FileCheck -input-file=%T/Inputs/ignore-conflict/ignore-conflict.cpp %S/Inputs/ignore-conflict/ignore-conflict.cpp
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/ignore-conflict.cpp
@@ -0,0 +1,4 @@
+class MyType {};
+// CHECK: #include 
+// CHECK-NEXT: #include 
+// CEHCK-NEXT: class MyType {};
Index: clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
===
--- /dev/null
+++ clang-tools-extra/test/clang-apply-replacements/Inputs/ignore-conflict/file1.yaml
@@ -0,0 +1,24 @@
+---
+MainSourceFile: ignore-conflict.cpp
+Diagnostics:
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+  - DiagnosticName: test-ignore-conflict-insertion
+DiagnosticMessage:
+  Message: Fix
+  FilePath: $(path)/ignore-conflict.cpp
+  FileOffset: 0
+  Replacements:
+- FilePath:$(path)/ignore-conflict.cpp
+  Offset:  0
+  Length:  0
+  ReplacementText: "#include \n"
+...
Index: clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
===
--- clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+++ clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
@@ -180,6 +180,7 @@
 def apply_fixes(args, clang_apply_replacements_binary, tmpdir):
   """Calls clang-apply-fixes on a given directory."""
   invocation = [clang_apply_replacements_binary]
+  invocation.append('-ignore-insert-conflict')
   if args.format:
 invocation.append('-format')
   if args.style:
Index: clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
===
--- clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
+++ clang-tools-extra/clang-apply-replacements/tool/ClangApplyReplacementsMain.cpp
@@ -42,6 +42,11 @@
  "merging/replacing."),
 cl::init(false), cl::cat(ReplacementCategory));
 
+static cl::opt IgnoreInsertConflict(
+"ignore-insert-conflict",
+cl::desc("Ignore insert conflict and keep running to fix."),
+cl::init(false), cl::cat(ReplacementCategory));
+
 static cl::opt DoFormat(
 "format",
 cl::desc("Enable formatting of code changed by applying replacements.\n"
@@ -131,7 +136,7 @@
   SourceManage

[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added reviewers: aaron.ballman, MTC.
Herald added subscribers: carlosgalvezp, shchenz, kbarton, xazax.hun, nemanjai.
Herald added a project: All.
Sockke requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.

If a union member is initialized, other members are still recorded in the 
container to be initialized.  This patch fixes this behavior.
Reference issue: https://github.com/llvm/llvm-project/issues/54748


https://reviews.llvm.org/D127293

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -552,3 +552,21 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  // CHECK-MESSAGES-NOT: warning:
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  // CHECK-MESSAGES-NOT: warning:
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), 
FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,18 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion())
+  AnyMemberHasInitPerUnion = true;
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +453,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +494,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = false;
   forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
  AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -552,3 +552,21 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  // CHECK-MESSAGES-NOT: warning:
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  // CHECK-MESSAGES-NOT: warning:
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/cl

[PATCH] D127293: [clang-tidy] Ignore other members in a union if any member of it is initialized in cppcoreguidelines-pro-type-member-init

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 435409.
Sockke edited the summary of this revision.
Sockke added a comment.

Fix test file.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D127293/new/

https://reviews.llvm.org/D127293

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -552,3 +552,19 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();
+  if (R && R->isUnion()) {
+// Erase all members in a union if any member of it is initialized.
+for (const auto *F : R->fields())
+  FieldDecls.erase(F);
+  } else
+FieldDecls.erase(M);
+}
+
 void removeFieldsInitializedInBody(
 const Stmt &Stmt, ASTContext &Context,
 SmallPtrSetImpl &FieldDecls) {
@@ -70,7 +81,7 @@
 hasLHS(memberExpr(member(fieldDecl().bind("fieldDecl")),
 Stmt, Context);
   for (const auto &Match : Matches)
-FieldDecls.erase(Match.getNodeAs("fieldDecl"));
+removeFieldInitialized(Match.getNodeAs("fieldDecl"), 
FieldDecls);
 }
 
 StringRef getName(const FieldDecl *Field) { return Field->getName(); }
@@ -418,13 +429,18 @@
 
   // Gather all fields (direct and indirect) that need to be initialized.
   SmallPtrSet FieldsToInit;
-  forEachField(ClassDecl, ClassDecl.fields(), [&](const FieldDecl *F) {
+  bool AnyMemberHasInitPerUnion = false;
+  forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
+ AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (IgnoreArrays && F->getType()->isArrayType())
   return;
+if (F->hasInClassInitializer() && F->getParent()->isUnion())
+  AnyMemberHasInitPerUnion = true;
 if (!F->hasInClassInitializer() &&
 utils::type_traits::isTriviallyDefaultConstructible(F->getType(),
 Context) &&
-!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield())
+!isEmpty(Context, F->getType()) && !F->isUnnamedBitfield() &&
+!AnyMemberHasInitPerUnion)
   FieldsToInit.insert(F);
   });
   if (FieldsToInit.empty())
@@ -437,7 +453,7 @@
   if (Init->isAnyMemberInitializer() && Init->isWritten()) {
 if (IsUnion)
   return; // We can only initialize one member of a union.
-FieldsToInit.erase(Init->getAnyMember());
+removeFieldInitialized(Init->getAnyMember(), FieldsToInit);
   }
 }
 removeFieldsInitializedInBody(*Ctor->getBody(), Context, FieldsToInit);
@@ -478,7 +494,7 @@
   // Collect all fields but only suggest a fix for the first member of unions,
   // as initializing more than one union member is an error.
   SmallPtrSet FieldsToFix;
-  bool AnyMemberHasInitPerUnion = false;
+  AnyMemberHasInitPerUnion = false;
   forEachFieldWithFilter(ClassDecl, ClassDecl.fields(),
  AnyMemberHasInitPerUnion, [&](const FieldDecl *F) {
 if (!FieldsToInit.count(F))


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-pro-type-member-init.cpp
@@ -552,3 +552,19 @@
   int A;
   // CHECK-FIXES-NOT: int A{};
 };
+
+struct S1 {
+  S1() {}
+  union {
+int a = 0;
+int b;
+  };
+};
+
+struct S2 {
+  S2() : a{} {}
+  union {
+int a;
+int b;
+  };
+};
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -61,6 +61,17 @@
   }
 }
 
+void removeFieldInitialized(const FieldDecl *M,
+SmallPtrSetImpl &FieldDecls) {
+  const RecordDecl *R = M->getParent();

[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke created this revision.
Sockke added a reviewer: aaron.ballman.
Herald added subscribers: carlosgalvezp, shchenz, kbarton, xazax.hun, nemanjai.
Herald added a reviewer: njames93.
Herald added a project: All.
Sockke requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.

https://godbolt.org/z/n4cK4fo3o
The checker missed a check for invalid vardecl and this could cause a false 
positive.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138655

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp


Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,8 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  if (MatchedDecl->isInvalidDecl())
+return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //


Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,8 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  if (MatchedDecl->isInvalidDecl())
+return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //
___
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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 477861.
Sockke added a comment.

Added test.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D138655/new/

https://reviews.llvm.org/D138655

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables-clang-diagnostic-error.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables-clang-diagnostic-error.cpp
===
--- /dev/null
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables-clang-diagnostic-error.cpp
@@ -0,0 +1,17 @@
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -fix-errors --
+
+#include "unknown.h"
+// CHECK-MESSAGES: :[[@LINE-1]]:10: error: 'unknown.h' file not found 
[clang-diagnostic-error]
+
+namespace std {
+template 
+struct vector {
+  vector();
+};
+
+void test() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized 
[cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+  std::vector arr;
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,8 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  if (MatchedDecl->isInvalidDecl())
+return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables-clang-diagnostic-error.cpp
===
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables-clang-diagnostic-error.cpp
@@ -0,0 +1,17 @@
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -fix-errors --
+
+#include "unknown.h"
+// CHECK-MESSAGES: :[[@LINE-1]]:10: error: 'unknown.h' file not found [clang-diagnostic-error]
+
+namespace std {
+template 
+struct vector {
+  vector();
+};
+
+void test() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized [cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+  std::vector arr;
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,8 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  if (MatchedDecl->isInvalidDecl())
+return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //
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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 478529.
Sockke added a comment.

Added test in existing `init-variables.cpp` file.


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,6 +1,15 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- 
-fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t 
-- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
+#include "unknown.h"
+// CHECK-MESSAGES: :[[@LINE-1]]:10: error: 'unknown.h' file not found 
[clang-diagnostic-error]
+
+namespace std {
+template 
+struct vector {
+  vector();
+};
+
 // Ensure that function declarations are not changed.
 void some_func(int x, double d, bool b, const char *p);
 
@@ -124,3 +133,10 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not 
initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized 
[cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+  std::vector arr;
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,8 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  if (MatchedDecl->isInvalidDecl())
+return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,6 +1,15 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- -fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t -- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
+#include "unknown.h"
+// CHECK-MESSAGES: :[[@LINE-1]]:10: error: 'unknown.h' file not found [clang-diagnostic-error]
+
+namespace std {
+template 
+struct vector {
+  vector();
+};
+
 // Ensure that function declarations are not changed.
 void some_func(int x, double d, bool b, const char *p);
 
@@ -124,3 +133,10 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized [cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+  std::vector arr;
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,8 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  if (MatchedDecl->isInvalidDecl())
+return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //
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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

Friendly ping.


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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 495413.
Sockke added a comment.

Rebased.


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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- 
-fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t 
-- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
 // Ensure that function declarations are not changed.
@@ -124,3 +124,13 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not 
initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized 
[cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+
+  UnknownType b;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: error: unknown type name 'UnknownType' 
[clang-diagnostic-error]
+  // CHECK-FIXES-NOT: {{^}}  UnknownType b = 0;{{$}}
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -59,6 +59,10 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  // Clang diagnostic error may cause the variable to be an invalid int vardecl
+  if (MatchedDecl->isInvalidDecl())
+return;
+
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- -fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t -- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
 // Ensure that function declarations are not changed.
@@ -124,3 +124,13 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized [cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+
+  UnknownType b;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: error: unknown type name 'UnknownType' [clang-diagnostic-error]
+  // CHECK-FIXES-NOT: {{^}}  UnknownType b = 0;{{$}}
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -59,6 +59,10 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  // Clang diagnostic error may cause the variable to be an invalid int vardecl
+  if (MatchedDecl->isInvalidDecl())
+return;
+
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //
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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGce6de98b80ad: [clang-tidy] Fix 
`cppcoreguidelines-init-variables` for invalid vardecl (authored by Sockke).

Repository:
  rG LLVM Github Monorepo

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Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
  
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp


Index: 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ 
clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- 
-fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t 
-- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
 // Ensure that function declarations are not changed.
@@ -124,3 +124,13 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not 
initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized 
[cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+
+  UnknownType b;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: error: unknown type name 'UnknownType' 
[clang-diagnostic-error]
+  // CHECK-FIXES-NOT: {{^}}  UnknownType b = 0;{{$}}
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -59,6 +59,10 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  // Clang diagnostic error may cause the variable to be an invalid int vardecl
+  if (MatchedDecl->isInvalidDecl())
+return;
+
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines/init-variables.cpp
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables %t -- -- -fno-delayed-template-parsing -fexceptions
+// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t -- -- -fno-delayed-template-parsing -fexceptions
 // CHECK-FIXES: {{^}}#include 
 
 // Ensure that function declarations are not changed.
@@ -124,3 +124,13 @@
   Fruit fruit;
   // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not initialized [cppcoreguidelines-init-variables]
 }
+
+void test_clang_diagnostic_error() {
+  int a;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized [cppcoreguidelines-init-variables]
+  // CHECK-FIXES: {{^}}  int a = 0;{{$}}
+
+  UnknownType b;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: error: unknown type name 'UnknownType' [clang-diagnostic-error]
+  // CHECK-FIXES-NOT: {{^}}  UnknownType b = 0;{{$}}
+}
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -59,6 +59,10 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  // Clang diagnostic error may cause the variable to be an invalid int vardecl
+  if (MatchedDecl->isInvalidDecl())
+return;
+
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //
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[PATCH] D138655: [clang-tidy] Fix `cppcoreguidelines-init-variables` for invalid vardecl

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

@carlosgalvezp Thanks for your review! I committed it myself.


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[PATCH] D115124: [clang-tidy] Fix `readability-container-size-empty` check for smart pointers

[gehry via Phabricator via cfe-commits]

Sockke accepted this revision.
Sockke added a comment.
This revision is now accepted and ready to land.

I think it looks great and safe enough.  It would be better to turn 
`!(*ptr).empty()` into `!ptr->empty()`, but I have no particular opinions at 
this point.  Let's see if @aaron.ballman has any comments.


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[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke updated this revision to Diff 401470.
Sockke added a comment.

Improve some description.


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Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -246,3 +246,97 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&v);
+void showInt(int v1, int &&v2);
+void showPointer(const char *&&s);
+void showPointer2(const char *const &&s);
+void showTriviallyCopyable(TriviallyCopyable &&obj);
+void showTriviallyCopyablePointer(const TriviallyCopyable *&&obj);
+void testFunctions() {
+  int a = 10;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-10]]:20: note: consider changing the 1st parameter of 'showInt' from 'int &&' to 'const int &'
+  showInt(int());
+  showInt(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-13]]:28: note: consider changing the 2nd parameter of 'showInt' from 'int &&' to 'const int &'
+  const char* s = "";
+  showPointer(std::move(s));
+  // CHECK-MESSAGES: :[[@LINE-1]]:15: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-16]]:32: note: consider changing the 1st parameter of 'showPointer' from 'const char *&&' to 'const char *'
+  showPointer2(std::move(s)); 
+  // CHECK-MESSAGES: :[[@LINE-1]]:16: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-18]]:39: note: consider changing the 1st parameter of 'showPointer2' from 'const char *const &&' to 'const char *const'
+  TriviallyCopyable *obj = new TriviallyCopyable();
+  showTriviallyCopyable(std::move(*obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: std::move of the expression of the trivially-copyable type 'TriviallyCopyable' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-21]]:48: note: consider changing the 1st parameter of 'showTriviallyCopyable' from 'TriviallyCopyable &&' to 'const TriviallyCopyable &'
+  showTriviallyCopyablePointer(std::move(obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:32: warning: std::move of the variable 'obj' of the trivially-copyable type 'TriviallyCopyable *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-23]]:62: note: consider changing the 1st parameter of 'showTriviallyCopyablePointer' from 'const TriviallyCopyable *&&' to 'const TriviallyCopyable *'
+}
+template 
+void forwardToShowInt(T && t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+}
+
+struct Tmp {
+  Tmp();
+  Tmp(int &&a);
+  Tmp(int v1, int &&a);
+  Tmp(const char *&&s);
+  Tmp(TriviallyCopyable&& obj);
+  Tmp(const TriviallyCopyable *&&obj);
+  void showTmp(TriviallyCopyable&& t);
+  static void showTmpStatic(TriviallyCopyable&& t);
+};
+void testMethods() {
+  Tmp t;
+  int a = 10;
+  Tmp t1(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-13]]:13: note: consider changing the 1st parameter of 'Tmp' from 'int &&' to 'const int &'
+  Tmp t2(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-15]]:21: note: consider changing the 2nd parameter of 'Tmp' from 'int &&' to 'const int &'
+  const char* s = "";
+  Tmp t3(std::move(s));
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-18]]:21: note: consider changing the 1st parameter of 'Tmp' from 'const char *&&' to 'const char *'
+  TriviallyCopyable *obj = new TriviallyCopyable();
+  Tmp t4(std::move(*obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:

[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGa7f8aea71485: [clang-tidy] Fix wrong FixIt in 
performance-move-const-arg (authored by Sockke).

Repository:
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Files:
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.cpp
  clang-tools-extra/clang-tidy/performance/MoveConstArgCheck.h
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp

Index: clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
===
--- clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/performance-move-const-arg.cpp
@@ -246,3 +246,97 @@
   };
   f(MoveSemantics());
 }
+
+void showInt(int &&v);
+void showInt(int v1, int &&v2);
+void showPointer(const char *&&s);
+void showPointer2(const char *const &&s);
+void showTriviallyCopyable(TriviallyCopyable &&obj);
+void showTriviallyCopyablePointer(const TriviallyCopyable *&&obj);
+void testFunctions() {
+  int a = 10;
+  showInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-10]]:20: note: consider changing the 1st parameter of 'showInt' from 'int &&' to 'const int &'
+  showInt(int());
+  showInt(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-13]]:28: note: consider changing the 2nd parameter of 'showInt' from 'int &&' to 'const int &'
+  const char* s = "";
+  showPointer(std::move(s));
+  // CHECK-MESSAGES: :[[@LINE-1]]:15: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-16]]:32: note: consider changing the 1st parameter of 'showPointer' from 'const char *&&' to 'const char *'
+  showPointer2(std::move(s)); 
+  // CHECK-MESSAGES: :[[@LINE-1]]:16: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-18]]:39: note: consider changing the 1st parameter of 'showPointer2' from 'const char *const &&' to 'const char *const'
+  TriviallyCopyable *obj = new TriviallyCopyable();
+  showTriviallyCopyable(std::move(*obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: std::move of the expression of the trivially-copyable type 'TriviallyCopyable' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-21]]:48: note: consider changing the 1st parameter of 'showTriviallyCopyable' from 'TriviallyCopyable &&' to 'const TriviallyCopyable &'
+  showTriviallyCopyablePointer(std::move(obj));
+  // CHECK-MESSAGES: :[[@LINE-1]]:32: warning: std::move of the variable 'obj' of the trivially-copyable type 'TriviallyCopyable *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-23]]:62: note: consider changing the 1st parameter of 'showTriviallyCopyablePointer' from 'const TriviallyCopyable *&&' to 'const TriviallyCopyable *'
+}
+template 
+void forwardToShowInt(T && t) {
+  showInt(static_cast(t));
+}
+void testTemplate() {
+  int a = 10;
+  forwardToShowInt(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+}
+
+struct Tmp {
+  Tmp();
+  Tmp(int &&a);
+  Tmp(int v1, int &&a);
+  Tmp(const char *&&s);
+  Tmp(TriviallyCopyable&& obj);
+  Tmp(const TriviallyCopyable *&&obj);
+  void showTmp(TriviallyCopyable&& t);
+  static void showTmpStatic(TriviallyCopyable&& t);
+};
+void testMethods() {
+  Tmp t;
+  int a = 10;
+  Tmp t1(std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-13]]:13: note: consider changing the 1st parameter of 'Tmp' from 'int &&' to 'const int &'
+  Tmp t2(a, std::move(a));
+  // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: std::move of the variable 'a' of the trivially-copyable type 'int' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-15]]:21: note: consider changing the 2nd parameter of 'Tmp' from 'int &&' to 'const int &'
+  const char* s = "";
+  Tmp t3(std::move(s));
+  // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: std::move of the variable 's' of the trivially-copyable type 'const char *' has no effect [performance-move-const-arg]
+  // CHECK-MESSAGES: :[[@LINE-18]]:21: note: consider changing the 1st parameter of 'Tmp' from 'const char *&&' to 

[PATCH] D107450: [clang-tidy] Fix wrong FixIt in performance-move-const-arg

[gehry via Phabricator via cfe-commits]

Sockke added a comment.

In D107450#3257877 , @aaron.ballman 
wrote:

> Do you need someone to commit on your behalf?

Thanks for your review, I committed it myself.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107450/new/

https://reviews.llvm.org/D107450

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