1 files changed, 7 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testSubstring.js b/js/src/jit-test/tests/basic/testSubstring.js
new file mode 100644
index 000000000..5916c23ab
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testSubstring.js
@@ -0,0 +1,7 @@
+function testSubstring() {
+    for (var i = 0; i < 5; ++i) {
+        actual = "".substring(5);
+    }
+    return actual;
+}
+assertEq(testSubstring(), "");