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| author | Jakub Staszak <kubastaszak@gmail.com> | 2013-08-19 19:02:33 +0000 |
|---|---|---|
| committer | Jakub Staszak <kubastaszak@gmail.com> | 2013-08-19 19:02:33 +0000 |
| commit | 630d17566793c7f25a05cd407ab9b79a1756966a (patch) | |
| tree | 53b5ffc19ae4785bc49e2cdb7ede050cb59829ba /include/llvm/Support/Compiler.h | |
| parent | 2b762cc75df2cbab21b5a1945fdf913a66de0f81 (diff) | |
| download | llvm-630d17566793c7f25a05cd407ab9b79a1756966a.tar.gz llvm-630d17566793c7f25a05cd407ab9b79a1756966a.tar.bz2 llvm-630d17566793c7f25a05cd407ab9b79a1756966a.tar.xz | |
Add definition of __warn_unused_result__ attribute. It will be used in the
futher commits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188689 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Support/Compiler.h')
| -rw-r--r-- | include/llvm/Support/Compiler.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h index feac9348dd..c32a48546c 100644 --- a/include/llvm/Support/Compiler.h +++ b/include/llvm/Support/Compiler.h @@ -179,6 +179,12 @@ #define LLVM_ATTRIBUTE_USED #endif +#if __has_attribute(warn_unused_result) || __GNUC_PREREQ(3, 4) +#define LLVM_ATTRIBUTE_UNUSED_RESULT __attribute__((__warn_unused_result__)) +#else +#define LLVM_ATTRIBUTE_UNUSED_RESULT +#endif + // Some compilers warn about unused functions. When a function is sometimes // used or not depending on build settings (e.g. a function only called from // within "assert"), this attribute can be used to suppress such warnings. |