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-rw-r--r--lib/Lex/PPMacroExpansion.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index d60cf0804f53..5fe2ef172e2f 100644
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -505,6 +505,7 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) {
.Case("attribute_cf_returns_retained", true)
.Case("attribute_ns_returns_not_retained", true)
.Case("attribute_ns_returns_retained", true)
+ .Case("attribute_objc_ivar_unused", true)
.Default(false);
}