diff options
| -rw-r--r-- | clang/lib/Sema/SemaOverload.cpp | 5 | ||||
| -rw-r--r-- | clang/test/SemaCXX/linkage-spec.cpp | 11 |
2 files changed, 16 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp index 339a79384c2..047a5d9ba58 100644 --- a/clang/lib/Sema/SemaOverload.cpp +++ b/clang/lib/Sema/SemaOverload.cpp @@ -573,6 +573,11 @@ Sema::CheckOverload(Scope *S, FunctionDecl *New, const LookupResult &Old, bool Sema::IsOverload(FunctionDecl *New, FunctionDecl *Old, bool UseUsingDeclRules) { + // If both of the functions are extern "C", then they are not + // overloads. + if (Old->isExternC() && New->isExternC()) + return false; + FunctionTemplateDecl *OldTemplate = Old->getDescribedFunctionTemplate(); FunctionTemplateDecl *NewTemplate = New->getDescribedFunctionTemplate(); diff --git a/clang/test/SemaCXX/linkage-spec.cpp b/clang/test/SemaCXX/linkage-spec.cpp index 0d1c166dcb3..fdb642c78fc 100644 --- a/clang/test/SemaCXX/linkage-spec.cpp +++ b/clang/test/SemaCXX/linkage-spec.cpp @@ -57,3 +57,14 @@ extern "C" // PR6991 extern "C" typedef int (*PutcFunc_t)(int); + + +// PR7859 +extern "C" void pr7859_a(int) {} // expected-note {{previous definition}} +extern "C" void pr7859_a(int) {} // expected-error {{redefinition}} + +extern "C" void pr7859_b() {} // expected-note {{previous definition}} +extern "C" void pr7859_b(int) {} // expected-error {{conflicting}} + +extern "C" void pr7859_c(short) {} // expected-note {{previous definition}} +extern "C" void pr7859_c(int) {} // expected-error {{conflicting}} |
