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      1 #include "test_utils.h"
      2 int   var = 0;
      3 extern "C" { // TODO: make this line empty when ignore vs. mangling is fixed.
      4 void Thread1() {
      5   usleep(100000);
      6   var = 1;
      7 }
      8 
      9 void Empty() {
     10 }
     11 
     12 void X() {
     13   if (var) {
     14     Empty();
     15   }
     16   var = 2;
     17 }
     18 
     19 void Y() {
     20   if (var) {
     21     Empty();
     22   }
     23   X();
     24 }
     25 
     26 void Thread2() {
     27   Y();
     28 }
     29 } // TODO: make this line empty when ignore vs. mangling is fixed.
     30 int main() {
     31   ANNOTATE_TRACE_MEMORY(&var);
     32   var = 0;
     33   MyThread t1(Thread1, NULL, "test-thread-1");
     34   MyThread t2(Thread2, NULL, "test-thread-2");
     35   t1.Start();
     36   t2.Start();
     37   t1.Join();
     38   t2.Join();
     39 }
     40