diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/gc/bug-924690.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/gc/bug-924690.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+x = []
+try {
+    (function() {
+        schedulegc(1);
+        ((function() {
+            return {
+                y: function() {
+                    u() = []
+                }
+            }
+        })())
+    })()
+    watch.call(x, "valueOf", function() {})
+    gc()
+} catch (e) { print(e); }
+try {
+    (function() {
+        x.valueOf =
+        (function() {
+                y();
+        })
+    })()
+    x + 2
+    print('foo')
+} catch (e) { print(e); }