diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug747926.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug747926.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+a = 'a';
+b = [,];
+exhaustiveSliceTest("exhaustive slice test 1", a);
+print('---');
+exhaustiveSliceTest("exhaustive slice test 2", b);
+function exhaustiveSliceTest(testname, a){
+  x = 0
+  var y = 0;
+  countHeap();
+    for (y=a.length; y + a.length; y--) { print(y);
+					  var b  = a.slice(x,y); }
+}