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#if 0 #include <threads.h> #include <pthread.h> int mtx_unlock(mtx_t *mtx) { SIGNAL_SAFE(0); return pthread_mutex_unlock(mtx) == 0 ? thrd_success : thrd_error; } CHECK_1(int, 0, mtx_unlock, mtx_t *) /* STDC(201112) */ #endif