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| author | Jordan Rose <jordan_rose@apple.com> | 2012-07-24 21:55:34 +0000 |
|---|---|---|
| committer | Jordan Rose <jordan_rose@apple.com> | 2012-07-24 21:55:34 +0000 |
| commit | 68449acea428a3c76a3d1e3854a171ccf1300253 (patch) | |
| tree | b185fde6f86ee6a1d0e61e7cc1e78806c44a7739 /clang | |
| parent | f30e9bfb9022937a89dbc5ac93bebc6ed003e6cd (diff) | |
| download | bcm5719-llvm-68449acea428a3c76a3d1e3854a171ccf1300253.tar.gz bcm5719-llvm-68449acea428a3c76a3d1e3854a171ccf1300253.zip | |
Add __has_feature(attribute_availability_with_message).
This tests for the ability to include a "message" field in availability
attributes, like so:
extern void ATSFontGetName(const char *oName)
__attribute__((availability(macosx,introduced=8.0,deprecated=9.0,
message="use CTFontCopyFullName")));
This was actually supported in Clang 3.1, but we got a request for a
__has_feature so that header files can use this more safely. It's
unfortunate that the 3.1 release doesn't include this, however.
<rdar://problem/11886458>
llvm-svn: 160699
Diffstat (limited to 'clang')
| -rw-r--r-- | clang/lib/Lex/PPMacroExpansion.cpp | 1 | ||||
| -rw-r--r-- | clang/test/Sema/attr-availability.c | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/clang/lib/Lex/PPMacroExpansion.cpp b/clang/lib/Lex/PPMacroExpansion.cpp index c9d400fc661..3a7f02cafbf 100644 --- a/clang/lib/Lex/PPMacroExpansion.cpp +++ b/clang/lib/Lex/PPMacroExpansion.cpp @@ -619,6 +619,7 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) { .Case("address_sanitizer", LangOpts.AddressSanitizer) .Case("attribute_analyzer_noreturn", true) .Case("attribute_availability", true) + .Case("attribute_availability_with_message", true) .Case("attribute_cf_returns_not_retained", true) .Case("attribute_cf_returns_retained", true) .Case("attribute_deprecated_with_message", true) diff --git a/clang/test/Sema/attr-availability.c b/clang/test/Sema/attr-availability.c index a13e351a6e9..b4a6f9616df 100644 --- a/clang/test/Sema/attr-availability.c +++ b/clang/test/Sema/attr-availability.c @@ -37,3 +37,9 @@ void f6(int) __attribute__((availability(ios,deprecated=4.0))); // expected-warn void f7(int) __attribute__((availability(ios,introduced=2.0))); void f7(int) __attribute__((availability(ios,deprecated=3.0))); // expected-note {{previous attribute is here}} void f7(int) __attribute__((availability(ios,deprecated=4.0))); // expected-warning {{availability does not match previous declaration}} + + +// <rdar://problem/11886458> +#if !__has_feature(attribute_availability_with_message) +# error "Missing __has_feature" +#endif |
