test/tsan/global_race.cc

   1 // RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
   2 #include <pthread.h>
   3 #include <stdio.h>
   4 #include <stddef.h>
   5 #include <unistd.h>
   6
   7 int GlobalData[10];
   8 int x;
   9 namespace XXX {
  10   struct YYY {
  11     static int ZZZ[10];
  12   };
  13   int YYY::ZZZ[10];
  14 }
  15
  16 void *Thread(void *a) {
  17   sleep(1);
  18   GlobalData[2] = 42;
  19   x = 1;
  20   XXX::YYY::ZZZ[0] = 1;
  21   return 0;
  22 }
  23
  24 int main() {
  25   fprintf(stderr, "addr=%p\n", GlobalData);
  26   fprintf(stderr, "addr2=%p\n", &x);
  27   fprintf(stderr, "addr3=%p\n", XXX::YYY::ZZZ);
  28   pthread_t t;
  29   pthread_create(&t, 0, Thread, 0);
  30   GlobalData[2] = 43;
  31   x = 0;
  32   XXX::YYY::ZZZ[0] = 0;
  33   pthread_join(t, 0);
  34 }
  35
  36 // CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
  37 // CHECK: addr2=[[ADDR2:0x[0-9,a-f]+]]
  38 // CHECK: addr3=[[ADDR3:0x[0-9,a-f]+]]
  39 // CHECK: WARNING: ThreadSanitizer: data race
  40 // CHECK: Location is global 'GlobalData' of size 40 at [[ADDR]] ({{.*}}+0x{{[0-9,a-f]+}})
  41 // CHECK: WARNING: ThreadSanitizer: data race
  42 // CHECK: Location is global 'x' of size 4 at [[ADDR2]] ({{.*}}+0x{{[0-9,a-f]+}})
  43 // CHECK: WARNING: ThreadSanitizer: data race
  44 // CHECK: Location is global 'XXX::YYY::ZZZ' of size 40 at [[ADDR3]] ({{.*}}+0x{{[0-9,a-f]+}})