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-rw-r--r--lib/Lex/PPMacroExpansion.cpp1
-rw-r--r--test/Parser/attr-availability.c5
2 files changed, 6 insertions, 0 deletions
diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index e1fc0ba88f..71f332769e 100644
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -530,6 +530,7 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) {
return llvm::StringSwitch<bool>(II->getName())
.Case("attribute_analyzer_noreturn", true)
+ .Case("attribute_availability", true)
.Case("attribute_cf_returns_not_retained", true)
.Case("attribute_cf_returns_retained", true)
.Case("attribute_deprecated_with_message", true)
diff --git a/test/Parser/attr-availability.c b/test/Parser/attr-availability.c
index 63bb5271e5..269f90847d 100644
--- a/test/Parser/attr-availability.c
+++ b/test/Parser/attr-availability.c
@@ -1,4 +1,9 @@
// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+#if !__has_feature(attribute_availability)
+# error 'availability' attribute is not available
+#endif
+
void f0() __attribute__((availability(macosx,introduced=10.2,deprecated=10.4,obsoleted=10.6)));
void f1() __attribute__((availability(macosx,deprecated=10.4,introduced=10.2,obsoleted=10.6)));