diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug753283.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug753283.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+var summary = '';
+function printStatus (msg) {
+  var lines = msg.split ("\n");
+}
+evaluate("\
+function f() {\
+    var ss = [\
+        new f(Int8Array, propertyIsEnumerable, '[let (x = 3, y = 4) x].map(0)')\
+    ];\
+}\
+try {\
+    f();\
+} catch (e) {}\
+  gczeal(4);\
+  printStatus (summary);\
+");
+evaluate("\
+function g(n, h) {\
+    var a = f;\
+    if (n <= 0) \
+    return f; \
+    var t = g(n - 1, h);\
+    var r = function(x) {    };\
+}\
+g(80, f);\
+");