[PATCH] D66874: [clang-tidy] Fix the potential infinite loop in recordIsTriviallyDefaultConstructible.

[Haojian Wu via Phabricator via cfe-commits]

hokein updated this revision to Diff 217628.
hokein marked an inline comment as done.
hokein added a comment.

Tweak the comment


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66874/new/

https://reviews.llvm.org/D66874

Files:
  clang-tools-extra/clang-tidy/utils/TypeTraits.cpp
  
clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-type-member-init-no-crash.cpp


Index: 
clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-type-member-init-no-crash.cpp
===================================================================
--- /dev/null
+++ 
clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-type-member-init-no-crash.cpp
@@ -0,0 +1,7 @@
+// RUN: %check_clang_tidy -expect-clang-tidy-error %s 
cppcoreguidelines-pro-type-member-init %t
+
+struct X {
+  X x;
+  // CHECK-MESSAGES: :[[@LINE-1]]:5: error: field has incomplete type 'X' 
[clang-diagnostic-error]
+  int a = 10;
+};
Index: clang-tools-extra/clang-tidy/utils/TypeTraits.cpp
===================================================================
--- clang-tools-extra/clang-tidy/utils/TypeTraits.cpp
+++ clang-tools-extra/clang-tidy/utils/TypeTraits.cpp
@@ -54,6 +54,10 @@
   // Non-C++ records are always trivially constructible.
   if (!ClassDecl)
     return true;
+  // It is impossible to detemine whether an ill-formed decl is trivially
+  // constructible.
+  if (RecordDecl.isInvalidDecl())
+    return false;
   // A class with a user-provided default constructor is not trivially
   // constructible.
   if (ClassDecl->hasUserProvidedDefaultConstructor())



Index: clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-type-member-init-no-crash.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-type-member-init-no-crash.cpp
@@ -0,0 +1,7 @@
+// RUN: %check_clang_tidy -expect-clang-tidy-error %s cppcoreguidelines-pro-type-member-init %t
+
+struct X {
+  X x;
+  // CHECK-MESSAGES: :[[@LINE-1]]:5: error: field has incomplete type 'X' [clang-diagnostic-error]
+  int a = 10;
+};
Index: clang-tools-extra/clang-tidy/utils/TypeTraits.cpp
===================================================================
--- clang-tools-extra/clang-tidy/utils/TypeTraits.cpp
+++ clang-tools-extra/clang-tidy/utils/TypeTraits.cpp
@@ -54,6 +54,10 @@
   // Non-C++ records are always trivially constructible.
   if (!ClassDecl)
     return true;
+  // It is impossible to detemine whether an ill-formed decl is trivially
+  // constructible.
+  if (RecordDecl.isInvalidDecl())
+    return false;
   // A class with a user-provided default constructor is not trivially
   // constructible.
   if (ClassDecl->hasUserProvidedDefaultConstructor())

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