diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index fa7b282af51..cc8de97b193 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2014-03-19  Pedro Alves  <palves@redhat.com>
+
+	* gdb.base/async.c (foo): Make 'x' volatile.  Write to it twice in
+	the same line.
+
 2014-03-19  Pedro Alves  <palves@redhat.com>
 
 	* gdb.base/async.c (main): Add "jump here" and "until here" line
diff --git a/gdb/testsuite/gdb.base/async.c b/gdb/testsuite/gdb.base/async.c
index fb5308248a8..76ce8be57a6 100644
--- a/gdb/testsuite/gdb.base/async.c
+++ b/gdb/testsuite/gdb.base/async.c
@@ -8,9 +8,10 @@ int
 foo ()
 #endif
 {
- int x, y;
+ int y;
+ volatile int x;
 
- x = 5;
+ x = 5; x = 5;
  y = 3;
 
  return x + y;