diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug943126.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug943126.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+// Test fast-path for String.split("").
+
+load(libdir + 'eqArrayHelper.js');
+
+assertEqArray("".split(""), []);
+assertEqArray("a".split(""), ["a"]);
+assertEqArray("abc".split(""), ["a", "b", "c"]);
+
+assertEqArray("abcd".split("", 2), ["a", "b"]);
+assertEqArray("abcd".split("", 0), []);
+assertEqArray("abcd".split("", -1), ["a", "b", "c", "d"]);
+
+// Note: V8 disagrees about this one, but we are correct by ecma-262 15.5.4.14 part 9.
+assertEqArray("abcd".split(undefined, 0), []);
+
+assertEqArray("abcd".split(undefined, 1), ["abcd"]);