Support accepting __gnu__ as a scoped attribute namespace that aliases to gnu.
This is useful in libstdc++ to avoid clashes with identifiers in the user's namespace.
llvm-svn: 345132
diff --git a/clang/lib/Basic/Attributes.cpp b/clang/lib/Basic/Attributes.cpp
index b7570d0..1c84d07 100644
--- a/clang/lib/Basic/Attributes.cpp
+++ b/clang/lib/Basic/Attributes.cpp
@@ -9,12 +9,17 @@
const LangOptions &LangOpts) {
StringRef Name = Attr->getName();
// Normalize the attribute name, __foo__ becomes foo.
- if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
- Name = Name.substr(2, Name.size() - 4);
-
-#include "clang/Basic/AttrHasAttributeImpl.inc"
-
- return 0;
+ if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
+ Name = Name.substr(2, Name.size() - 4);
+
+ // Normalize the scope name, but only for gnu attributes.
+ StringRef ScopeName = Scope ? Scope->getName() : "";
+ if (ScopeName == "__gnu__")
+ ScopeName = ScopeName.slice(2, ScopeName.size() - 2);
+
+#include "clang/Basic/AttrHasAttributeImpl.inc"
+
+ return 0;
}
const char *attr::getSubjectMatchRuleSpelling(attr::SubjectMatchRule Rule) {