diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_1/regress/regress-524743.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_1/regress/regress-524743.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+// |reftest| skip-if((isDebugBuild&&!xulRuntime.shell)||Android)  -- hang
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+if (typeof gczeal != 'undefined' && typeof gc != 'undefined') {
+    try
+    {
+        gczeal(2);
+        var obj = {};
+        for (var i = 0; i < 50; i++) {
+            obj["_" + i] = 0;
+            gc();
+        }
+    }
+    catch(ex)
+    {
+    }
+    gczeal(0);
+}
+reportCompare("no assertion failure", "no assertion failure", "bug 524743");