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/* { dg-shouldfail "tsan" } */
#include <pthread.h>
#include <stdio.h>
#include <stddef.h>
#include <unistd.h>
pthread_mutex_t Mtx;
int Global;
void *Thread1(void *x) {
pthread_mutex_init(&Mtx, 0);
pthread_mutex_lock(&Mtx);
Global = 42;
pthread_mutex_unlock(&Mtx);
return NULL;
}
void *Thread2(void *x) {
sleep(1);
pthread_mutex_lock(&Mtx);
Global = 43;
pthread_mutex_unlock(&Mtx);
return NULL;
}
int main() {
pthread_t t[2];
pthread_create(&t[0], NULL, Thread1, NULL);
pthread_create(&t[1], NULL, Thread2, NULL);
pthread_join(t[0], NULL);
pthread_join(t[1], NULL);
pthread_mutex_destroy(&Mtx);
return 0;
}
/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
/* { dg-output " Atomic read of size 1 at .* by thread T2:(\n|\r\n|\r)" } */
/* { dg-output " #0 pthread_mutex_lock.*" } */
/* { dg-output " #1 Thread2.* .*(race_on_mutex.c:21|\\?{2}:0) (.*)" } */
/* { dg-output " Previous write of size 1 at .* by thread T1:(\n|\r\n|\r)" } */
/* { dg-output " #0 pthread_mutex_init .* (.)*" } */
/* { dg-output " #1 Thread1.* .*(race_on_mutex.c:12|\\?{2}:0) .*" } */
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