hokein created this revision.
hokein added a reviewer: alexfh.
hokein added a subscriber: cfe-commits.
http://reviews.llvm.org/D20519
Files:
clang-tidy/misc/UnusedUsingDeclsCheck.cpp
test/clang-tidy/misc-unused-using-decls.cpp
Index: test/clang-tidy/misc-unused-using-decls.cpp
===================================================================
--- test/clang-tidy/misc-unused-using-decls.cpp
+++ test/clang-tidy/misc-unused-using-decls.cpp
@@ -93,6 +93,14 @@
DEFINE_INT(test);
#undef DEFIND_INT
+namespace N1 {
+ struct S {};
+ template<int X> void f(S);
+}
+namespace N2 {
+ template<class T> void f(T t);
+}
+
// ----- Usages -----
void f(B b);
void g() {
@@ -107,3 +115,7 @@
cout << endl;
}
+void ADL(N1::S s) {
+ using N2::f;
+ f<3>(s);
+}
Index: clang-tidy/misc/UnusedUsingDeclsCheck.cpp
===================================================================
--- clang-tidy/misc/UnusedUsingDeclsCheck.cpp
+++ clang-tidy/misc/UnusedUsingDeclsCheck.cpp
@@ -18,20 +18,9 @@
namespace tidy {
namespace misc {
-// A function that helps to tell whether a TargetDecl will be checked.
-// We only check a TargetDecl if :
-// * The corresponding UsingDecl is not defined in macros or in class
-// definitions.
-// * Only variable, function and class types are considered.
+// A function that helps to tell whether a TargetDecl of a UsingDecl will be
+// checked. We only check variable, function and class types.
static bool ShouldCheckDecl(const Decl *TargetDecl) {
- // Ignores using-declarations defined in macros.
- if (TargetDecl->getLocation().isMacroID())
- return false;
-
- // Ignores using-declarations defined in class definition.
- if (isa<CXXRecordDecl>(TargetDecl->getDeclContext()))
- return false;
-
return isa<RecordDecl>(TargetDecl) || isa<ClassTemplateDecl>(TargetDecl) ||
isa<FunctionDecl>(TargetDecl) || isa<VarDecl>(TargetDecl) ||
isa<FunctionTemplateDecl>(TargetDecl);
@@ -49,6 +38,17 @@
void UnusedUsingDeclsCheck::check(const MatchFinder::MatchResult &Result) {
if (const auto *Using = Result.Nodes.getNodeAs<UsingDecl>("using")) {
+ // Ignores using-declarations defined in macros.
+ if (Using->getLocation().isMacroID())
+ return;
+ // Ignores using-declarations defined in class definitions.
+ if (isa<CXXRecordDecl>(Using->getDeclContext()))
+ return;
+ // Ignores using-declarations defined in function definitions to avoid
+ // arguement-dependent lookup.
+ if (isa<FunctionDecl>(Using->getDeclContext()))
+ return;
+
UsingDeclContext Context(Using);
Context.UsingDeclRange = CharSourceRange::getCharRange(
Using->getLocStart(),
Index: test/clang-tidy/misc-unused-using-decls.cpp
===================================================================
--- test/clang-tidy/misc-unused-using-decls.cpp
+++ test/clang-tidy/misc-unused-using-decls.cpp
@@ -93,6 +93,14 @@
DEFINE_INT(test);
#undef DEFIND_INT
+namespace N1 {
+ struct S {};
+ template<int X> void f(S);
+}
+namespace N2 {
+ template<class T> void f(T t);
+}
+
// ----- Usages -----
void f(B b);
void g() {
@@ -107,3 +115,7 @@
cout << endl;
}
+void ADL(N1::S s) {
+ using N2::f;
+ f<3>(s);
+}
Index: clang-tidy/misc/UnusedUsingDeclsCheck.cpp
===================================================================
--- clang-tidy/misc/UnusedUsingDeclsCheck.cpp
+++ clang-tidy/misc/UnusedUsingDeclsCheck.cpp
@@ -18,20 +18,9 @@
namespace tidy {
namespace misc {
-// A function that helps to tell whether a TargetDecl will be checked.
-// We only check a TargetDecl if :
-// * The corresponding UsingDecl is not defined in macros or in class
-// definitions.
-// * Only variable, function and class types are considered.
+// A function that helps to tell whether a TargetDecl of a UsingDecl will be
+// checked. We only check variable, function and class types.
static bool ShouldCheckDecl(const Decl *TargetDecl) {
- // Ignores using-declarations defined in macros.
- if (TargetDecl->getLocation().isMacroID())
- return false;
-
- // Ignores using-declarations defined in class definition.
- if (isa<CXXRecordDecl>(TargetDecl->getDeclContext()))
- return false;
-
return isa<RecordDecl>(TargetDecl) || isa<ClassTemplateDecl>(TargetDecl) ||
isa<FunctionDecl>(TargetDecl) || isa<VarDecl>(TargetDecl) ||
isa<FunctionTemplateDecl>(TargetDecl);
@@ -49,6 +38,17 @@
void UnusedUsingDeclsCheck::check(const MatchFinder::MatchResult &Result) {
if (const auto *Using = Result.Nodes.getNodeAs<UsingDecl>("using")) {
+ // Ignores using-declarations defined in macros.
+ if (Using->getLocation().isMacroID())
+ return;
+ // Ignores using-declarations defined in class definitions.
+ if (isa<CXXRecordDecl>(Using->getDeclContext()))
+ return;
+ // Ignores using-declarations defined in function definitions to avoid
+ // arguement-dependent lookup.
+ if (isa<FunctionDecl>(Using->getDeclContext()))
+ return;
+
UsingDeclContext Context(Using);
Context.UsingDeclRange = CharSourceRange::getCharRange(
Using->getLocStart(),
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