mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2026-11-06 05:17:42 +00:00
Kacper Michajłow
9058b3622e
The null, pointer-overflow and alignment checks put a branch into every loop body and the vectorizer gives up, so clang warns about the transformation it was asked for on each loop that carries the pragma. Leave the hint out when the compiler reports UBSan, which clang and GCC 14 or newer do through __has_feature. ASan alone does not block the vectorization. Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_SANITIZER_H
|
|
#define AVUTIL_SANITIZER_H
|
|
|
|
#include "config.h"
|
|
|
|
#if defined(__has_feature)
|
|
#if __has_feature(address_sanitizer)
|
|
#define HAVE_ASAN 1
|
|
#endif
|
|
#if __has_feature(memory_sanitizer)
|
|
#define HAVE_MSAN 1
|
|
#endif
|
|
#if __has_feature(undefined_behavior_sanitizer)
|
|
#define HAVE_UBSAN 1
|
|
#endif
|
|
#endif
|
|
#if defined(__SANITIZE_ADDRESS__)
|
|
#undef HAVE_ASAN
|
|
#define HAVE_ASAN 1
|
|
#endif
|
|
#ifndef HAVE_ASAN
|
|
#define HAVE_ASAN 0
|
|
#endif
|
|
#ifndef HAVE_MSAN
|
|
#define HAVE_MSAN 0
|
|
#endif
|
|
#ifndef HAVE_UBSAN
|
|
#define HAVE_UBSAN 0
|
|
#endif
|
|
|
|
/* Mark allocated memory that nothing may touch until it is unpoisoned. */
|
|
#if HAVE_ASAN
|
|
#include <sanitizer/asan_interface.h>
|
|
#define FF_ASAN_POISON(ptr, size) __asan_poison_memory_region(ptr, size)
|
|
#define FF_ASAN_UNPOISON(ptr, size) __asan_unpoison_memory_region(ptr, size)
|
|
#else
|
|
#define FF_ASAN_POISON(ptr, size) ((void)(ptr), (void)(size))
|
|
#define FF_ASAN_UNPOISON(ptr, size) ((void)(ptr), (void)(size))
|
|
#endif
|
|
|
|
/* Mark memory as uninitialized. */
|
|
#if HAVE_MSAN
|
|
#include <sanitizer/msan_interface.h>
|
|
#define FF_MEM_UNDEFINED(ptr, size) __msan_allocated_memory(ptr, size)
|
|
#elif CONFIG_MEMORY_POISONING && HAVE_VALGRIND_MEMCHECK_H
|
|
#include <valgrind/memcheck.h>
|
|
#define FF_MEM_UNDEFINED(ptr, size) VALGRIND_MAKE_MEM_UNDEFINED(ptr, size)
|
|
#else
|
|
#define FF_MEM_UNDEFINED(ptr, size) ((void)(ptr), (void)(size))
|
|
#endif
|
|
|
|
#endif /* AVUTIL_SANITIZER_H */
|