diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug719231.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug719231.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+// Don't abort in IonBuilder.
+function f() {
+	// For loop with missing condition.
+	for (var y = 0; ; y++) {
+		if (y == 55) break;
+	}
+	return y;
+}
+
+assertEq(f(), 55);