1 files changed, 4 insertions, 5 deletions
diff --git a/test/tsan/signal_errno.cc b/test/tsan/signal_errno.cc
index 1fa20f36810b..8305e84930f3 100644
--- a/test/tsan/signal_errno.cc
+++ b/test/tsan/signal_errno.cc
@@ -1,10 +1,7 @@
 // RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
-#include <pthread.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include "test.h"
 #include <signal.h>
 #include <sys/types.h>
-#include <unistd.h>
 #include <errno.h>
 
 pthread_t mainth;
@@ -16,12 +13,13 @@ static void MyHandler(int, siginfo_t *s, void *c) {
 }
 
 static void* sendsignal(void *p) {
-  sleep(1);
+  barrier_wait(&barrier);
   pthread_kill(mainth, SIGPROF);
   return 0;
 }
 
 static __attribute__((noinline)) void loop() {
+  barrier_wait(&barrier);
   while (done == 0) {
     volatile char *p = (char*)malloc(1);
     p[0] = 0;
@@ -31,6 +29,7 @@ static __attribute__((noinline)) void loop() {
 }
 
 int main() {
+  barrier_init(&barrier, 2);
   mainth = pthread_self();
   struct sigaction act = {};
   act.sa_sigaction = &MyHandler;