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// RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
pthread_mutex_t m;
int x;
void *thr(void *p) {
pthread_mutex_lock(&m);
x = 42;
return 0;
}
int main() {
pthread_mutexattr_t a;
pthread_mutexattr_init(&a);
pthread_mutexattr_setrobust(&a, PTHREAD_MUTEX_ROBUST);
pthread_mutex_init(&m, &a);
pthread_t th;
pthread_create(&th, 0, thr, 0);
sleep(1);
if (pthread_mutex_trylock(&m) != EOWNERDEAD) {
fprintf(stderr, "not EOWNERDEAD\n");
exit(1);
}
x = 43;
pthread_join(th, 0);
fprintf(stderr, "DONE\n");
}
// This is a false positive, tsan must not bark at the data race.
// But currently it does.
// CHECK-NOT: WARNING: ThreadSanitizer WARNING: double lock of mutex
// CHECK: WARNING: ThreadSanitizer: data race
// CHECK-NOT: EOWNERDEAD
// CHECK: DONE
// CHECK-NOT: WARNING: ThreadSanitizer
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