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26 #ifndef AVUTIL_ATTRIBUTES_H
27 #define AVUTIL_ATTRIBUTES_H
30 # define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y)
32 # define AV_GCC_VERSION_AT_LEAST(x,y) 0
35 #if AV_GCC_VERSION_AT_LEAST(3,1)
36 # define av_always_inline __attribute__((always_inline)) inline
37 #elif defined(_MSC_VER)
38 # define av_always_inline __forceinline
40 # define av_always_inline inline
43 #if AV_GCC_VERSION_AT_LEAST(3,1)
44 # define av_noinline __attribute__((noinline))
49 #if AV_GCC_VERSION_AT_LEAST(3,1)
50 # define av_pure __attribute__((pure))
55 #if AV_GCC_VERSION_AT_LEAST(2,6)
56 # define av_const __attribute__((const))
61 #if AV_GCC_VERSION_AT_LEAST(4,3)
62 # define av_cold __attribute__((cold))
67 #if AV_GCC_VERSION_AT_LEAST(4,1)
68 # define av_flatten __attribute__((flatten))
73 #if AV_GCC_VERSION_AT_LEAST(3,1)
74 # define attribute_deprecated __attribute__((deprecated))
76 # define attribute_deprecated
80 # define av_unused __attribute__((unused))
90 #if AV_GCC_VERSION_AT_LEAST(3,1)
91 # define av_used __attribute__((used))
96 #if AV_GCC_VERSION_AT_LEAST(3,3)
97 # define av_alias __attribute__((may_alias))
102 #if defined(__GNUC__) && !defined(__ICC)
103 # define av_uninit(x) x=x
105 # define av_uninit(x) x
109 # define av_builtin_constant_p __builtin_constant_p
110 # define av_printf_format(fmtpos, attrpos) __attribute__((__format__(__printf__, fmtpos, attrpos)))
112 # define av_builtin_constant_p(x) 0
113 # define av_printf_format(fmtpos, attrpos)
116 #if AV_GCC_VERSION_AT_LEAST(2,5)
117 # define av_noreturn __attribute__((noreturn))