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| author | Ted Kremenek <kremenek@apple.com> | 2010-03-05 22:43:32 +0000 |
|---|---|---|
| committer | Ted Kremenek <kremenek@apple.com> | 2010-03-05 22:43:32 +0000 |
| commit | 444b035b5325973bdd5a622006fda6367a670a94 (patch) | |
| tree | a3fa922bd4a8956034215eebb05a0033dec80b07 | |
| parent | 34f6a322430e2cdcb38167781eb848b9b8e928bb (diff) | |
Augment __has_feature to report that Clang supports adding attribute 'unused'
to an Objective-C instance variable.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97850 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Lex/PPMacroExpansion.cpp | 1 | ||||
| -rw-r--r-- | test/SemaObjC/unused.m | 10 |
2 files changed, 10 insertions, 1 deletions
diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp index d60cf0804f..5fe2ef172e 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); } diff --git a/test/SemaObjC/unused.m b/test/SemaObjC/unused.m index e99418875a..a33a1bc02f 100644 --- a/test/SemaObjC/unused.m +++ b/test/SemaObjC/unused.m @@ -39,7 +39,15 @@ void test2() { // instance variables, which GCC does not. //===------------------------------------------------------------------------=== +#if __has_feature(attribute_objc_ivar_unused) +#define UNUSED_IVAR __attribute__((unused)) +#else +#error __attribute__((unused)) not supported on ivars +#endif + @interface TestUnusedIvar { - id x __attribute__((unused)); // no-warning + id y __attribute__((unused)); // no-warning + id x UNUSED_IVAR; // no-warning } @end + |