2 files changed, 3 insertions, 0 deletions
diff --git a/compiler-rt/lib/tsan/lit_tests/stack_race.cc b/compiler-rt/lib/tsan/lit_tests/stack_race.cc
index 7fabce22a85..01ff2e83961 100644
--- a/compiler-rt/lib/tsan/lit_tests/stack_race.cc
+++ b/compiler-rt/lib/tsan/lit_tests/stack_race.cc
@@ -1,8 +1,10 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
 #include <pthread.h>
 #include <stddef.h>
+#include <unistd.h>
 
 void *Thread(void *a) {
+  sleep(1);
   *(int*)a = 43;
   return 0;
 }
diff --git a/compiler-rt/lib/tsan/lit_tests/stack_race2.cc b/compiler-rt/lib/tsan/lit_tests/stack_race2.cc
index c759ec92774..577f12c95f2 100644
--- a/compiler-rt/lib/tsan/lit_tests/stack_race2.cc
+++ b/compiler-rt/lib/tsan/lit_tests/stack_race2.cc
@@ -4,6 +4,7 @@
 #include <unistd.h>
 
 void *Thread2(void *a) {
+  sleep(1);
   *(int*)a = 43;
   return 0;
 }