diff --git a/configure b/configure
index bb126e8364..0e0adde410 100755
--- a/configure
+++ b/configure
@@ -3329,6 +3329,7 @@ __uint128_t b;
 int main (void) {
   a = a + b;
   b = a * b;
+  a = a * a;
   return 0;
 }
 EOF