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-rw-r--r--clang/lib/Sema/SemaDecl.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 80b23557a7a..7659fba14a3 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -2154,7 +2154,9 @@ void Sema::MergeTypedefNameDecl(Scope *S, TypedefNameDecl *New,
// -Wtypedef-redefinition. If either the original or the redefinition is
// in a system header, don't emit this for compatibility with GCC.
if (getDiagnostics().getSuppressSystemWarnings() &&
- (Context.getSourceManager().isInSystemHeader(Old->getLocation()) ||
+ // Some standard types are defined implicitly in Clang (e.g. OpenCL).
+ (Old->isImplicit() ||
+ Context.getSourceManager().isInSystemHeader(Old->getLocation()) ||
Context.getSourceManager().isInSystemHeader(New->getLocation())))
return;
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