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#ifndef ATTRIBUTES_H
#define ATTRIBUTES_H
#if (!defined(__GNUC__) && !defined(__clang__)) || defined(M2CTX) || defined(__sgi)
#ifndef __attribute__
#define __attribute__(x)
#endif
#endif
#ifndef FALLTHROUGH
#ifdef PERMUTER
#define FALLTHROUGH
#elif __STDC_VERSION__ >= 202000L
#define FALLTHROUGH [[fallthrough]]
#else
#define FALLTHROUGH __attribute__((fallthrough))
#endif
#endif
#ifndef NORETURN
#ifdef PERMUTER
#define NORETURN
#elif __STDC_VERSION__ >= 202000L
#define NORETURN [[noreturn]]
#elif __STDC_VERSION__ >= 201112L
#define NORETURN _Noreturn
#else
#define NORETURN __attribute__((noreturn))
#endif
#endif
#ifndef UNUSED
#ifdef PERMUTER
#define UNUSED
#elif __STDC_VERSION__ >= 202000L
#define UNUSED [[maybe_unused]]
#else
#define UNUSED __attribute__((unused))
#endif
#endif
#endif
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