diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug826581.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug826581.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+// Don't crash.
+
+try {
+    x = "          ()    ";
+    for (var y = 0; y < 19; y++) {
+        x += x;
+    }
+} catch (e) {}
+
+try {
+	"".replace(x, "", "gy");
+} catch (e) { }