--- a/gcc/testsuite/g++.dg/gcov/gcov-threads-1.C	Fri Oct 27 22:46:09 2017 +0900
+++ b/gcc/testsuite/g++.dg/gcov/gcov-threads-1.C	Thu Oct 25 07:37:49 2018 +0900
@@ -19,6 +19,8 @@
       for (int32_t i = NR - 1; i >= starti; --i)
 	pthread_mutex_unlock (&cndMs[i]);
   }
+
+  return 0;
 }
 int main(int argc, char **argv) {
   for (unsigned i = 0; i < NR; i++)
@@ -31,14 +33,14 @@
   {
     ids[i] = i;
     int r = pthread_create (&t[i], NULL, ContentionNoDeadlock_thread, &ids[i]);
-    assert (r == 0);				/* count(5) */
+    assert (r == 0);				/* count(5*) */
   }
 
   int ret;
   for (int i = 0; i < NR; i++)
     {
       int r = pthread_join (t[i], (void**)&ret);
-      assert (r == 0);				/* count(5) */
+      assert (r == 0);				/* count(5*) */
     }
 
   return 0;					/* count(1) */