diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/asm.js/bug885976.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/asm.js/bug885976.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+// |jit-test| error: TypeError
+function test(stdlib, foreign) {
+    "use asm"
+    var ff = foreign.ff
+    function f(y) {
+        y = +y;
+        ff(0);
+    }
+    return f;
+};
+f = test(this, {ff: Object.preventExtensions});
+f();