// RUN: %clangxx_tsan -O1 -DTEST_ERROR=ERANGE %s -o %t && %run %t 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-SYS %s
// RUN: %clangxx_tsan -O1 -DTEST_ERROR=-1 %s -o %t && not %run %t 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-USER %s

#include <assert.h>
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <string.h>

char buffer[1000];

void *Thread(void *p) {
  (void)strerror_r(TEST_ERROR, buffer, sizeof(buffer));
  return p;
}

int main() {
  pthread_t th[2];
  pthread_create(&th[0], 0, Thread, 0);
  pthread_create(&th[1], 0, Thread, 0);
  pthread_join(th[0], 0);
  pthread_join(th[1], 0);
  fprintf(stderr, "DONE\n");
}

// CHECK-USER: WARNING: ThreadSanitizer: data race
// CHECK-SYS-NOT: WARNING: ThreadSanitizer: data race

// CHECK: DONE

// RUN: %clangxx_tsan -O1 -DTEST_ERROR=ERANGE %s -o %t && %run %t 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-SYS %s
// RUN: %clangxx_tsan -O1 -DTEST_ERROR=-1 %s -o %t && not %run %t 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-USER %s

#include <assert.h>
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <string.h>

char buffer[1000];

void *Thread(void *p) {
  return strerror_r(TEST_ERROR, buffer, sizeof(buffer));
}

int main() {
  pthread_t th[2];
  pthread_create(&th[0], 0, Thread, 0);
  pthread_create(&th[1], 0, Thread, 0);
  pthread_join(th[0], 0);
  pthread_join(th[1], 0);
  fprintf(stderr, "DONE\n");
}

// CHECK-USER: WARNING: ThreadSanitizer: data race
// CHECK-SYS-NOT: WARNING: ThreadSanitizer: data race

// CHECK: DONE

--- 
+++ 
@@ -10,7 +10,8 @@
 char buffer[1000];
 
 void *Thread(void *p) {
-  return strerror_r(TEST_ERROR, buffer, sizeof(buffer));
+  (void)strerror_r(TEST_ERROR, buffer, sizeof(buffer));
+  return p;
 }
 
 int main() {
Fix tsan test for Darwin. NFCI.

On Darwin, strerror_r returns an int, not a char*. I don't think this
test really depends on what strerror_r returns, so I've used something
else in place of the result of the call to strerror_r.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@304941 91177308-0d34-0410-b5e6-96231b3b80d8
