forked from OSchip/llvm-project
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
// RUN: %clang_tsan -O1 %s -o %t
|
|
// RUN: %deflake %run %t | FileCheck %s --check-prefix=CHECK-NOZUPP
|
|
// RUN: %env_tsan_opts=suppressions='%s.supp':print_suppressions=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-SUPP
|
|
|
|
#include "test.h"
|
|
|
|
int *mem;
|
|
pthread_mutex_t mtx;
|
|
|
|
void *Thread1(void *x) {
|
|
pthread_mutex_lock(&mtx);
|
|
free(mem);
|
|
pthread_mutex_unlock(&mtx);
|
|
barrier_wait(&barrier);
|
|
return NULL;
|
|
}
|
|
|
|
void *Thread2(void *x) {
|
|
barrier_wait(&barrier);
|
|
pthread_mutex_lock(&mtx);
|
|
mem[0] = 42;
|
|
pthread_mutex_unlock(&mtx);
|
|
return NULL;
|
|
}
|
|
|
|
int main() {
|
|
barrier_init(&barrier, 2);
|
|
mem = (int*)malloc(100);
|
|
pthread_mutex_init(&mtx, 0);
|
|
pthread_t t;
|
|
pthread_create(&t, NULL, Thread1, NULL);
|
|
Thread2(0);
|
|
pthread_join(t, NULL);
|
|
pthread_mutex_destroy(&mtx);
|
|
return 0;
|
|
}
|
|
|
|
// CHECK-NOZUPP: WARNING: ThreadSanitizer: heap-use-after-free
|
|
// CHECK-NOZUPP: Write of size 4 at {{.*}} by main thread{{.*}}:
|
|
// CHECK-NOZUPP: #0 Thread2
|
|
// CHECK-NOZUPP: #1 main
|
|
// CHECK-NOZUPP: Previous write of size 8 at {{.*}} by thread T1{{.*}}:
|
|
// CHECK-NOZUPP: #0 free
|
|
// CHECK-NOZUPP: #{{(1|2)}} Thread1
|
|
// CHECK-NOZUPP: SUMMARY: ThreadSanitizer: heap-use-after-free{{.*}}Thread2
|
|
// CHECK-SUPP: ThreadSanitizer: Matched 1 suppressions
|
|
// CHECK-SUPP: 1 race:^Thread2$
|