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include: Fix triggering of Clang's -Wexpansion-to-defined in SDL_endian.h

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It doesn't like #if statements that uses a macro that uses defined(x).
This commit is contained in:
Ryan C. Gordon 2021-09-18 10:44:32 -04:00
parent 8f41412327
commit b8da02e6ef
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GPG Key ID: FA148B892AB48044
1 changed files with 15 additions and 9 deletions
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16
include/SDL_endian.h
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@ -93,16 +93,22 @@ extern "C" {
*/
/* various modern compilers may have builtin swap */
#if defined(__GNUC__)
# define HAS_BUILTIN_BSWAP16 (_SDL_HAS_BUILTIN(__builtin_bswap16)) || \
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
# define HAS_BUILTIN_BSWAP32 (_SDL_HAS_BUILTIN(__builtin_bswap32)) || \
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
# define HAS_BUILTIN_BSWAP64 (_SDL_HAS_BUILTIN(__builtin_bswap64)) || \
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
/* this one is broken */
#define HAS_BROKEN_BSWAP (defined(__GNUC__) && \
(__GNUC__ == 2 && __GNUC_MINOR__ <= 95))
# define HAS_BROKEN_BSWAP (__GNUC__ == 2 && __GNUC_MINOR__ <= 95)
#else
# define HAS_BUILTIN_BSWAP16 0
# define HAS_BUILTIN_BSWAP32 0
# define HAS_BUILTIN_BSWAP64 0
# define HAS_BROKEN_BSWAP 0
#endif
#if HAS_BUILTIN_BSWAP16
#define SDL_Swap16(x) __builtin_bswap16(x)