1 files changed, 4 insertions, 2 deletions
diff --git a/lib/tsan/lit_tests/memcpy_race.cc b/lib/tsan/lit_tests/memcpy_race.cc
index 806740dda241..857728ba0540 100644
--- a/lib/tsan/lit_tests/memcpy_race.cc
+++ b/lib/tsan/lit_tests/memcpy_race.cc
@@ -10,13 +10,15 @@ char *data1 = new char[10];
 char *data2 = new char[10];
 
 void *Thread1(void *x) {
-  memcpy(data+5, data1, 1);
+  static volatile int size = 1;
+  memcpy(data+5, data1, size);
   return NULL;
 }
 
 void *Thread2(void *x) {
+  static volatile int size = 4;
   sleep(1);
-  memcpy(data+3, data2, 4);
+  memcpy(data+3, data2, size);
   return NULL;
 }