diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug958432.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug958432.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+function h(i, i) {
+    i = ([Infinity([])])(1 ? l : arguments)
+}
+for (var j = 0; j < 2; ++j) {
+    try {
+        h(-Number, -Number)
+    } catch (e) {}
+}
+
+function f() {
+    function f(i0, i1) {
+        i0 = i0 | 0;
+        i = i1 | 0;
+        switch (1) {
+            case -3:
+                switch (f) {}
+        } {
+            return 0
+        }(arguments)
+    }
+    return f
+};
+for (var j = 0; j < 5; ++j) {
+    (function(x) {
+        f()(f()(x, f()()))
+    })()
+}