1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1077427.js b/js/src/jit-test/tests/ion/bug1077427.js
new file mode 100644
index 000000000..27b0306f8
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1077427.js
@@ -0,0 +1,12 @@
+
+(function f() {
+  var i;
+  var x = 3;
+  var o1 = { a: x };
+  var o2 = { a: 2 };
+  for (i = 0; i < 5; i++)
+    o2.a = x;
+  Object.preventExtensions({ a: 1 });
+  for (i = 0; i < 5; i++)
+    ;
+})();