diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Script-getLineOffsets-07.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Script-getLineOffsets-07.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+// Lazy scripts should correctly report line offsets
+
+var g = newGlobal();
+var dbg = new Debugger();
+
+g.eval("// Header comment\n" +   // <- line 6 in this file
+       "\n" +
+       "\n" +
+       "function f(n) {\n" +     // <- line 9 in this file
+       "    var foo = '!';\n" +
+       "}");
+
+dbg.addDebuggee(g);
+var scripts = dbg.findScripts();
+for (var i = 0; i < scripts.length; i++) {
+  // Nothing should have offsets for the deffun on line 9 if lazy scripts
+  // correctly update the position.
+  assertEq(scripts[i].getLineOffsets(9).length, 0);
+}