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// RUN: %clangxx_tsan %s -o %t
// RUN: not %run %t 2>&1 | FileCheck %s
// RUN: %env_tsan_opts=detect_deadlocks=1 not %run %t 2>&1 | FileCheck %s
// RUN: %env_tsan_opts=detect_deadlocks=0 %run %t 2>&1 | FileCheck %s --check-prefix=DISABLED
// RUN: echo "deadlock:main" > %t.supp
// RUN: %env_tsan_opts=suppressions='%t.supp' %run %t 2>&1 | FileCheck %s --check-prefix=DISABLED
// RUN: echo "deadlock:zzzz" > %t.supp
// RUN: %env_tsan_opts=suppressions='%t.supp' not %run %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <stdio.h>
int main() {
pthread_mutex_t mu1, mu2;
pthread_mutex_init(&mu1, NULL);
pthread_mutex_init(&mu2, NULL);
// mu1 => mu2
pthread_mutex_lock(&mu1);
pthread_mutex_lock(&mu2);
pthread_mutex_unlock(&mu2);
pthread_mutex_unlock(&mu1);
// mu2 => mu1
pthread_mutex_lock(&mu2);
pthread_mutex_lock(&mu1);
// CHECK: ThreadSanitizer: lock-order-inversion (potential deadlock)
// DISABLED-NOT: ThreadSanitizer
// DISABLED: PASS
pthread_mutex_unlock(&mu1);
pthread_mutex_unlock(&mu2);
pthread_mutex_destroy(&mu1);
pthread_mutex_destroy(&mu2);
fprintf(stderr, "PASS\n");
}
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