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| author | Sami Kerola | 2014-11-22 09:49:34 +0100 |
|---|---|---|
| committer | Karel Zak | 2014-12-19 11:32:38 +0100 |
| commit | d763c2308165d40db631bd123f0ddde830de3ffb (patch) | |
| tree | 7ee20df5b1e99435fe3a896c1fe839e96d548768 /include/c.h | |
| parent | strutils: fix unsigned integer overflows [AddressSanitizer] (diff) | |
| download | kernel-qcow2-util-linux-d763c2308165d40db631bd123f0ddde830de3ffb.tar.gz kernel-qcow2-util-linux-d763c2308165d40db631bd123f0ddde830de3ffb.tar.xz kernel-qcow2-util-linux-d763c2308165d40db631bd123f0ddde830de3ffb.zip | |
include/c: define UL_ASAN_BLACKLIST address_sanitizer function attribute
The UL_ASAN_BLACKLIST allows AddressSanitizer to be switched off for
functions that cannot be checked.
Reference: http://dxr.mozilla.org/mozilla-central/source/mfbt/Attributes.h
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Diffstat (limited to 'include/c.h')
| -rw-r--r-- | include/c.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/c.h b/include/c.h index 068e2676a..a72e2641c 100644 --- a/include/c.h +++ b/include/c.h @@ -321,4 +321,21 @@ static inline int xusleep(useconds_t usec) #define stringify_value(s) stringify(s) #define stringify(s) #s +/* + * UL_ASAN_BLACKLIST is a macro to tell AddressSanitizer (a compile-time + * instrumentation shipped with Clang and GCC) to not instrument the + * annotated function. Furthermore, it will prevent the compiler from + * inlining the function because inlining currently breaks the blacklisting + * mechanism of AddressSanitizer. + */ +#if defined(__has_feature) +# if __has_feature(address_sanitizer) +# define UL_ASAN_BLACKLIST __attribute__((noinline)) __attribute__((no_sanitize_memory)) __attribute__((no_sanitize_address)) +# else +# define UL_ASAN_BLACKLIST /* nothing */ +# endif +#else +# define UL_ASAN_BLACKLIST /* nothing */ +#endif + #endif /* UTIL_LINUX_C_H */ |