611 __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (1)));
612extern int pthread_barrierattr_getpshared (__const pthread_barrierattr_t *
613 __restrict __attr,
614 int *__restrict __pshared)
615 __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (1, 2)));
616extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
617 int __pshared)
618 __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (1)));
619extern int pthread_key_create (pthread_key_t *__key,
620 void (*__destr_function) (void *))
621 __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (1)));
622extern int pthread_key_delete (pthread_key_t __key) __attribute__ ((__nothrow__ , __leaf__));
623extern void *pthread_getspecific (pthread_key_t __key) __attribute__ ((__nothrow__ , __leaf__));
624extern int pthread_setspecific (pthread_key_t __key,
625 __const void *__pointer) __attribute__ ((__nothrow__ , __leaf__)) ;
626extern int pthread_getcpuclockid (pthread_t __thread_id,
627 __clockid_t *__clock_id)
628 __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (2)));
629extern int pthread_atfork (void (*__prepare) (void),
630 void (*__parent) (void),
631 void (*__child) (void)) __attribute__ ((__nothrow__ , __leaf__));
632
633int flag1 = 0, flag2 = 0;
634int turn;
635int x;
636void *thr1() {
637 flag1 = 1;
638 turn = 1;
639 while (flag2==1 && turn==1) {};
640 x = 0;
641 if (!(x<=0)) ERROR: goto ERROR;;
642 flag1 = 0;
643}
644void *thr2() {
645 flag2 = 1;
646 turn = 0;
647 while (flag1==1 && turn==0) {};
648 x = 1;
649 if (!(x>=1)) ERROR: goto ERROR;;
650 flag2 = 0;
651}