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| author | dab <dab@FreeBSD.org> | 2019-11-19 14:46:28 +0000 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2020-10-26 14:18:46 +0100 |
| commit | b9967c3f9040c25efe0a67b59dbd05ee79d0a97d (patch) | |
| tree | 2bffbde99f7208489ef21a9cb6d722e7047d97af /newlib/libc/include | |
| parent | c25de3a3c51e3d27133947a3d943c2a2127445d5 (diff) | |
| download | newlib-b9967c3f9040c25efe0a67b59dbd05ee79d0a97d.zip newlib-b9967c3f9040c25efe0a67b59dbd05ee79d0a97d.tar.gz newlib-b9967c3f9040c25efe0a67b59dbd05ee79d0a97d.tar.bz2 | |
Don't sanitize linker_set
The assumptions of linker_set don't play nicely with
AddressSanitizer. AddressSanitizer adds a 'redzone' of zeros around
globals (including those in named sections), whereas linker_set
assumes they are all packed consecutively like a pointer array. So:
let's annotate linker_set so that AddressSanitizer ignores it.
Submitted by: Matthew Bryan <matthew.bryan@isilon.com>
Reviewed by: kib, rang_acm.org
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D22239
Diffstat (limited to 'newlib/libc/include')
| -rw-r--r-- | newlib/libc/include/sys/cdefs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/newlib/libc/include/sys/cdefs.h b/newlib/libc/include/sys/cdefs.h index 9a0466f..1f2ce06 100644 --- a/newlib/libc/include/sys/cdefs.h +++ b/newlib/libc/include/sys/cdefs.h @@ -709,6 +709,13 @@ /* Function should not be analyzed. */ #define __no_lock_analysis __lock_annotate(no_thread_safety_analysis) +/* Function or variable should not be sanitized, ie. by AddressSanitizer */ +#if __has_attribute(no_sanitize) +#define __nosanitizeaddress __attribute__((no_sanitize("address"))) +#else +#define __nosanitizeaddress +#endif + /* Guard variables and structure members by lock. */ #define __guarded_by(x) __lock_annotate(guarded_by(x)) #define __pt_guarded_by(x) __lock_annotate(pt_guarded_by(x)) |