diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/gc/bug-912734.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/gc/bug-912734.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,43 @@
+(function() {
+    Object.defineProperty(this, "h2", {
+        e: false,
+        e: false,
+        get: function() {
+            return {}
+        }
+    })
+})()
+a2 = new Array
+Object.create(a2);
+(function() {
+    Object.defineProperty(this, "t2", {
+        e: true,
+        e: RegExp(""),
+        get: function() {
+            return new Uint32Array(this.a2)
+        }
+    })
+})()
+r = (function() {
+    for each(let c in []) {}
+})()
+var r = 1;
+s = ""
+print(s.match(r));
+r.l
+with(b = 3);
+t2;
+(function() {
+    Object.defineProperty(a2, 3, {
+        e: false,
+        e: true,
+        get: (function() {
+            evalcx("[]", s.g)
+        })
+    })
+})()
+h2
+r = RegExp("");
+r.exec();
+schedulegc(7);
+t2;