diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/breakpoint-10.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/breakpoint-10.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+var g = newGlobal();
+var dbg = new Debugger(g);
+
+var fscript = null;
+dbg.onNewScript = function(script) {
+    dbg.onNewScript = undefined;
+    fscript = script.getChildScripts()[0];
+    assertEq(fscript.staticLevel, 1);
+}
+
+g.eval("function f(x) { arguments[0] = 3; return x }");
+assertEq(fscript !== null, true);
+
+fscript.setBreakpoint(0, {hit:function(frame) {
+    assertEq(frame.eval('x').return, 1);
+    assertEq(frame.arguments[0], 1);
+    return {return:42};
+}});
+
+assertEq(g.f(1), 42);