1 files changed, 8 insertions, 1 deletions
diff --git a/lib/Basic/Attributes.cpp b/lib/Basic/Attributes.cpp
index b7570d03c85ae..9a8eb3d932cc6 100644
--- a/lib/Basic/Attributes.cpp
+++ b/lib/Basic/Attributes.cpp
@@ -12,9 +12,16 @@ int clang::hasAttribute(AttrSyntax Syntax, const IdentifierInfo *Scope,
   if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
     Name = Name.substr(2, Name.size() - 4);
 
+  // Normalize the scope name, but only for gnu and clang attributes.
+  StringRef ScopeName = Scope ? Scope->getName() : "";
+  if (ScopeName == "__gnu__")
+    ScopeName = "gnu";
+  else if (ScopeName == "_Clang")
+    ScopeName = "clang";
+
 #include "clang/Basic/AttrHasAttributeImpl.inc"
 
-  return 0;
+  return 0;
 }
 
 const char *attr::getSubjectMatchRuleSpelling(attr::SubjectMatchRule Rule) {