diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug862100.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug862100.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+
+function TestCase(n, d, e, a) {}
+function reportCompare (expected, actual, description) {
+  new TestCase("", description, expected, actual);
+}
+new TestCase( "", "", 0, Number(new Number()) );
+reportCompare(true, true);
+evaluate("\
+function TestCase(n, d, e, a) {}\
+test_negation(-2147483648, 2147483648);\
+test_negation(2147483647, -2147483647);\
+function test_negation(value, expected)\
+    reportCompare(expected, '', '-(' + value + ') == ' + expected);\
+");