diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug756236.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug756236.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+// Binary: cache/js-dbg-64-14735b4dbccc-linux
+// Flags: --ion-eager
+//
+
+gczeal(4);
+function startTest() {}
+function TestCase(n, d, e, a)
+    dump = (function () {});
+  if (typeof document != "object" || !document.location.href.match(/jsreftest.html/)) {}
+function writeHeaderToLog( string ) {}
+var SECTION = "11.4.5";
+new TestCase( SECTION,  "var MYVAR= void 0; --MYVAR", NaN, eval("var MYVAR=void 0; --MYVAR") );
+new TestCase( SECTION, "var MYVAR=0;--MYVAR;MYVAR", -1, eval("var MYVAR=0;--MYVAR;MYVAR") );
+new TestCase( SECTION, "var MYVAR=0;--MYVAR;MYVAR", -1, eval("var MYVAR=0;--MYVAR;MYVAR") );