diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug743071.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug743071.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,51 @@
+// Binary: cache/js-dbg-64-a9a18824b4c1-linux
+// Flags: --ion-eager
+//
+
+{
+  try
+  {
+    try
+    {
+    }
+    catch(ex1)
+    {
+    }
+  }
+  catch(ex)
+  {
+  }
+}
+function optionsClear() {
+  var optionNames = options().split(',');
+  for (var i = 0; i < optionNames.length; i++)
+  {
+    var optionName = optionNames[i];
+    if (optionName &&
+        optionName != "methodjit_always")
+    {
+      options(optionName);
+    }
+  }
+}
+{
+  optionsClear();
+  {
+  }
+}
+function test() {
+  for ( gTc=0; gTc < gTestcases.length; gTc++ ) {
+    try
+    {
+    }
+    catch(e)
+    {
+    }
+  }
+}
+try {
+var g = newGlobal();
+g.eval("(" + function () {
+        dbg = new Debugger(debuggeeGlobal);
+    } + ")();");
+} catch(exc0) {}