[FFmpeg-cvslog] [ffmpeg] branch master updated. 47c6af7d29 avutil/avassert: always implement av_assume with av_unreachable

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The branch, master has been updated
       via  47c6af7d299c96b2e65f5f10526e0f34e00b23c8 (commit)
      from  3ab9eebba7e73fbf7f4cff0f5b8c3a0d1b8ac884 (commit)


- Log -----------------------------------------------------------------
commit 47c6af7d299c96b2e65f5f10526e0f34e00b23c8
Author:     Kacper Michajłow <kasper93 at gmail.com>
AuthorDate: Fri Aug 8 00:57:18 2025 +0200
Commit:     Leo Izen <leo.izen at gmail.com>
CommitDate: Thu Aug 14 19:42:13 2025 +0000

    avutil/avassert: always implement av_assume with av_unreachable
    
    One of the design goals of this macro is the ability to support static
    inline predicate functions. Which is emitting warning in clang that a
    function may have side-effects and the condition will be ignored. MSVC
    doesn't emit warning, but also ignore predicate in such cases.
    
    Instead of using assume builtins, implement it using unreachable. Which
    solves this case for MSVC and Clang.
    
    This reverts ea56fe60acc139a4dc7c531f2cb9f5319cef7a09, but also extends
    it to MSVC, which is affected in the similar way.
    
    Signed-off-by: Kacper Michajłow <kasper93 at gmail.com>

diff --git a/libavutil/avassert.h b/libavutil/avassert.h
index f4f039dfb0..209c0d9d17 100644
--- a/libavutil/avassert.h
+++ b/libavutil/avassert.h
@@ -108,16 +108,10 @@ do {                                                                    \
 #define av_unreachable(msg) ((void)0)
 #endif
 
-#if AV_HAS_BUILTIN(__builtin_assume)
-#define av_assume(cond) __builtin_assume(cond)
-#elif defined(_MSC_VER)
-#define av_assume(cond) __assume(cond)
-#else
 #define av_assume(cond) do { \
     if (!(cond))             \
         av_unreachable();    \
 } while (0)
 #endif
-#endif
 
 #endif /* AVUTIL_AVASSERT_H */

-----------------------------------------------------------------------

Summary of changes:
 libavutil/avassert.h | 6 ------
 1 file changed, 6 deletions(-)


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