Add __has_feature(attribute_availability_with_version_underscores).

This goes with r218884 from, um, last autumn. rdar://problem/21754114 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@242480 91177308-0d34-0410-b5e6-96231b3b80d8
johanst · Jul 16, 2015 · 320e3c5 · 320e3c5
1 parent e546956
commit 320e3c5
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diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
@@ -1057,6 +1057,7 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) {
       .Case("attribute_availability", true)
       .Case("attribute_availability_with_message", true)
       .Case("attribute_availability_app_extension", true)
+      .Case("attribute_availability_with_version_underscores", true)
       .Case("attribute_cf_returns_not_retained", true)
       .Case("attribute_cf_returns_retained", true)
       .Case("attribute_cf_returns_on_parameters", true)

diff --git a/test/SemaObjC/attr-availability-1.m b/test/SemaObjC/attr-availability-1.m
@@ -3,6 +3,10 @@
 // RUN: %clang_cc1 -x objective-c++ -std=c++03 -triple x86_64-apple-darwin9.0.0 -fsyntax-only -verify %s
 // rdar://18490958
 
+#if !__has_feature(attribute_availability_with_version_underscores)
+# error "missing feature"
+#endif
+
 @protocol P
 - (void)proto_method __attribute__((availability(macosx,introduced=10_1,deprecated=10_2))); // expected-note 2 {{'proto_method' has been explicitly marked deprecated here}}
 @end