diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Script-getLineOffsets-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Script-getLineOffsets-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+// getLineOffsets correctly places the various parts of a ForStatement.
+
+var g = newGlobal();
+var dbg = Debugger(g);
+dbg.onDebuggerStatement = function (frame) {
+    function handler(line) {
+        return {hit: function (frame) { g.log += "" + line; }};
+    }
+
+    var s = frame.eval("f").return.script;
+    for (var line = 2; line <= 6; line++) {
+        var offs = s.getLineOffsets(g.line0 + line);
+        var h = handler(line);
+        for (var i = 0; i < offs.length; i++) {
+            assertEq(s.getOffsetLine(offs[i]), g.line0 + line);
+            s.setBreakpoint(offs[i], h);
+        }
+    }
+};
+
+g.log = '';
+g.eval("var line0 = Error().lineNumber;\n" +
+       "function f(n) {\n" +        // line0 + 1
+       "    for (var i = 0;\n" +    // line0 + 2
+       "         i < n;\n" +        // line0 + 3
+       "         i++)\n" +          // line0 + 4
+       "        log += '.';\n" +    // line0 + 5
+       "    log += '!';\n" +        // line0 + 6
+       "}\n" +
+       "debugger;\n");
+assertEq(g.log, "");
+g.f(3);
+assertEq(g.log, "235.435.435.436!");