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#ifndef __SYS_CDEFS_H
#define __SYS_CDEFS_H
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS }
#define __dead __attribute__((__noreturn__))
#define __used __attribute__((__used__))
#define __unused __attribute__((__unused__))
#define __packed __attribute__((__packed__))
#define __aligned(x) __attribute__((__aligned__(x)))
#define __malloc __attribute__((__malloc__))
#define __pure __attribute__((__pure__))
#define __nodiscard __attribute__((__warn_unused_result__))
#define __predict_true(exp) __builtin_expect((exp) != 0, 1)
#define __predict_false(exp) __builtin_expect((exp) != 0, 0)
#endif
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