diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug677977.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug677977.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+// Binary: cache/js-dbg-64-48e43edc8834-linux
+// Flags:
+//
+
+var g = newGlobal();
+var dbg = Debugger(g);
+dbg.onDebuggerStatement = function (frame) {
+    var s = frame.eval("f").return.script;
+};
+function test(s) {
+    g.eval("line0 = Error().lineNumber;\n" +
+           "debugger;\n" +          // line0 + 1
+           "function f(i) {\n" +    // line0 + 2
+           "}\n");
+}
+test("i = 128;\n" +  "}\n");
+var hits = 0;
+dbg.onNewScript = function (s) {
+    hits++;
+};
+assertEq(g.eval("eval('2 + 3')"), 5);
+this.gczeal(hits, 2);
+var fn = g.evaluate("(function (a) { return 5 + a; })", {compileAndGo: false});
+var g2 = newGlobal();
+dbg.addDebuggee(g2, dbg);
+g2.clone(fn);