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swscale: Do not expand a macro with 'defined' in it

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Fixes:

    libswscale/utils.c:1632:5: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
    #if USE_MMAP
        ^
    libswscale/utils.c:1577:49: note: expanded from macro 'USE_MMAP'
    #define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)
                                                    ^
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Derek Buitenhuis 2017-08-24 21:04:13 +01:00 committed by Luca Barbato
parent 29ba1e6076
commit 5e3f6dc701
1 changed files with 5 additions and 1 deletions
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6
libswscale/utils.c
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@ -1098,7 +1098,11 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
}
}
#define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)
#if HAVE_MMAP && HAVE_MPROTECT && defined(MAP_ANONYMOUS)
#define USE_MMAP 1
#else
#define USE_MMAP 0
#endif
/* precalculate horizontal scaler filter coefficients */
{