diff --git a/configure b/configure
index 29b5589fa4..5ae7e4a348 100755
--- a/configure
+++ b/configure
@@ -1346,6 +1346,7 @@ static int sfaa(int *ptr)
 int main(void)
 {
   int val = 42;
+  val = __sync_val_compare_and_swap(&val, 0, 1);
   sfaa(&val);
   return val;
 }