2020-08-04 23:28:16 +01:00
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#pragma once
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#define VERCMP(x, y, cx, cy) ((cx > x) || ((cx == x) && (cy >= y)))
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#if defined(__GNUC__) && defined(__GNUC_MINOR__)
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#define GNUC_AT_LEAST(x, y) VERCMP(x, y, __GNUC__, __GNUC_MINOR__)
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#else
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#define GNUC_AT_LEAST(x, y) 0
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#endif
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#ifdef __has_attribute
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#define HAS_ATTRIBUTE(x) __has_attribute(x)
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#else
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#define HAS_ATTRIBUTE(x) 0
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#endif
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#ifdef __has_builtin
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#define HAS_BUILTIN(x) __has_builtin(x)
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#else
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#define HAS_BUILTIN(x) 0
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#endif
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2020-08-07 20:42:34 +01:00
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#if GNUC_AT_LEAST(3, 0) || HAS_ATTRIBUTE(unused) || defined(__TINYC__)
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#define UNUSED __attribute__((__unused__))
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#else
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#define UNUSED
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#endif
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2020-12-27 16:14:17 +01:00
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#if HAS_ATTRIBUTE(const)
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#define CONST __attribute__((__const__))
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#else
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#define CONST
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#endif
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2020-08-04 23:28:16 +01:00
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#if GNUC_AT_LEAST(3, 0) || HAS_ATTRIBUTE(malloc)
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#define MALLOC __attribute__((__malloc__))
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#else
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#define MALLOC
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#endif
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#if GNUC_AT_LEAST(3, 0) || HAS_ATTRIBUTE(format)
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#define PRINTF(x) __attribute__((__format__(__printf__, (x), (x + 1))))
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#define VPRINTF(x) __attribute__((__format__(__printf__, (x), 0)))
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#else
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#define PRINTF(x)
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#define VPRINTF(x)
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#endif
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#if (GNUC_AT_LEAST(3, 0) || HAS_BUILTIN(__builtin_expect)) && defined(__OPTIMIZE__)
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#else
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#define likely(x) (x)
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#define unlikely(x) (x)
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#endif
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#if GNUC_AT_LEAST(3, 3) || HAS_ATTRIBUTE(nonnull)
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#define NONNULL_ARGS __attribute__((__nonnull__))
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#define NONNULL_ARG(...) __attribute__((__nonnull__(__VA_ARGS__)))
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#else
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#define NONNULL_ARGS
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#define NONNULL_ARG(...)
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#endif
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#if GNUC_AT_LEAST(3, 4) || HAS_ATTRIBUTE(warn_unused_result)
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#define WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
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#else
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#define WARN_UNUSED_RESULT
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#endif
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#if GNUC_AT_LEAST(4, 3) || HAS_ATTRIBUTE(cold)
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#define COLD __attribute__((__cold__))
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#else
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#define COLD
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#endif
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#if GNUC_AT_LEAST(5, 0) || HAS_ATTRIBUTE(returns_nonnull)
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#define RETURNS_NONNULL __attribute__((__returns_nonnull__))
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#else
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#define RETURNS_NONNULL
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#endif
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#define XMALLOC MALLOC RETURNS_NONNULL WARN_UNUSED_RESULT
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#define XSTRDUP XMALLOC NONNULL_ARGS
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#if __STDC_VERSION__ >= 201112L
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#define NORETURN _Noreturn
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#elif GNUC_AT_LEAST(3, 0)
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#define NORETURN __attribute__((__noreturn__))
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#else
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#define NORETURN
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#endif
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