compiler-rt/test/tsan/fd_location_closed.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 #include "test.h"
   3
   4 #include <fcntl.h>
   5
   6 void *Thread(void *x) {
   7   int fd = (long)x;
   8   char buf;
   9   read(fd, &buf, 1);
  10   barrier_wait(&barrier);
  11   close(fd);
  12   return NULL;
  13 }
  14
  15 int main() {
  16   barrier_init(&barrier, 2);
  17   int fd = open("/dev/random", O_RDONLY);
  18   pthread_t t[2];
  19   pthread_create(&t[0], NULL, Thread, (void *)(long)fd);
  20   pthread_create(&t[1], NULL, Thread, (void *)(long)fd);
  21
  22   pthread_join(t[0], NULL);
  23   pthread_join(t[1], NULL);
  24 }
  25
  26 // CHECK: WARNING: ThreadSanitizer: data race
  27 // CHECK:   Location is file descriptor {{[0-9]+}} {{(destroyed by thread|created by main)}}
  28 // CHECK:     #0 {{close|open}}
  29 // CHECK:     #1 {{Thread|main}}