diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Script-getLineOffsets-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Script-getLineOffsets-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// getLineOffsets on a line that is definitely outside a script returns an empty array.
+
+var g = newGlobal();
+var dbg = Debugger(g);
+var hits = 0;
+dbg.onDebuggerStatement = function (frame) {
+    var offs = frame.script.getLineOffsets(g.line0 + 2);
+    assertEq(Array.isArray(offs), true);
+    assertEq(offs.length, 0);
+    hits++;
+};
+g.eval("var line0 = Error().lineNumber; debugger;");
+assertEq(hits, 1);