[rustc.git] / src / compiler-rt / test / tsan / inlined_memcpy_race2.cc

// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
#include "test.h"
#include <string.h>

int y[4], z[4];

void *MemMoveThread(void *a) {
  memmove((int*)a, z, 16);
  barrier_wait(&barrier);
  return NULL;
}

void *MemSetThread(void *a) {
  barrier_wait(&barrier);
  memset((int*)a, 0, 16);
  return NULL;
}

int main() {
  barrier_init(&barrier, 2);
  pthread_t t[2];
  // Race on y between memmove and memset
  pthread_create(&t[0], NULL, MemMoveThread, y);
  pthread_create(&t[1], NULL, MemSetThread, y);
  pthread_join(t[0], NULL);
  pthread_join(t[1], NULL);

  fprintf(stderr, "PASS\n");
  return 0;
}

// CHECK: WARNING: ThreadSanitizer: data race
// CHECK:   #0 memset
// CHECK:   #1 MemSetThread
// CHECK:  Previous write
// CHECK:   #0 {{(memcpy|memmove)}}
// CHECK:   #1 MemMoveThread
Commit	Line	Data
5bcae85e	1	// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 \| FileCheck %s
92a42be0 SL	2	#include "test.h"
	3	#include <string.h>
	4
	5	int y[4], z[4];
	6
	7	void MemMoveThread(void a) {
	8	memmove((int*)a, z, 16);
	9	barrier_wait(&barrier);
	10	return NULL;
	11	}
	12
	13	void MemSetThread(void a) {
	14	barrier_wait(&barrier);
	15	memset((int*)a, 0, 16);
	16	return NULL;
	17	}
	18
	19	int main() {
	20	barrier_init(&barrier, 2);
	21	pthread_t t[2];
	22	// Race on y between memmove and memset
	23	pthread_create(&t[0], NULL, MemMoveThread, y);
	24	pthread_create(&t[1], NULL, MemSetThread, y);
	25	pthread_join(t[0], NULL);
	26	pthread_join(t[1], NULL);
	27
5bcae85e	28	fprintf(stderr, "PASS\n");
92a42be0 SL	29	return 0;
	30	}
	31
	32	// CHECK: WARNING: ThreadSanitizer: data race
	33	// CHECK: #0 memset
	34	// CHECK: #1 MemSetThread
	35	// CHECK: Previous write
5bcae85e	36	// CHECK: #0 {{(memcpy\|memmove)}}
92a42be0	37	// CHECK: #1 MemMoveThread