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/* { dg-shouldfail "tsan" } */
/* { dg-additional-options "-ldl" } */
#include <pthread.h>
#include "tsan_barrier.h"
static pthread_barrier_t barrier;
pthread_rwlock_t rwlock;
int GLOB;
void *Thread1(void *p) {
(void)p;
pthread_rwlock_rdlock(&rwlock);
// Write under reader lock.
barrier_wait(&barrier);
GLOB++;
pthread_rwlock_unlock(&rwlock);
return 0;
}
int main(int argc, char *argv[]) {
barrier_init(&barrier, 2);
pthread_rwlock_init(&rwlock, NULL);
pthread_rwlock_rdlock(&rwlock);
pthread_t t;
pthread_create(&t, 0, Thread1, 0);
volatile int x = GLOB;
(void)x;
pthread_rwlock_unlock(&rwlock);
barrier_wait(&barrier);
pthread_join(t, 0);
pthread_rwlock_destroy(&rwlock);
return 0;
}
/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
/* { dg-output " Write of size 4 at 0x\[0-9a-f\]+ by thread T1.*:(\n|\r\n|\r).*" } */
/* { dg-output " #0 Thread1.*\(write_in_reader_lock.c|\\?{2}\):\[0-9\]+ .*" } */
/* { dg-output " Previous read of size 4 at.* by main thread.*:(\n|\r\n|\r).*" } */
/* { dg-output " #0 main.*\(write_in_reader_lock.c|\\?{2}\):\[0-9\]+.*" } */
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