diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Script-clearBreakpoint-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Script-clearBreakpoint-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+// A breakpoint handler may clear itself.
+
+var g = newGlobal();
+var bphits = 0;
+var handler = {hit: function (frame) { frame.script.clearBreakpoint(this); bphits++; }};
+var dbg = Debugger(g);
+var hits = 0;
+dbg.onDebuggerStatement = function (frame) {
+    var offs = frame.script.getLineOffsets(g.line0 + 3);
+    for (var i = 0; i < offs.length; i++)
+        frame.script.setBreakpoint(offs[i], handler);
+    hits++;
+};
+g.eval("var line0 = Error().lineNumber;\n" +
+       "debugger;\n" +                    // line0 + 1
+       "for (var i = 0; i < 4; i++)\n" +  // line0 + 2
+       "    result = 'ok';\n");           // line0 + 3
+assertEq(hits, 1);
+assertEq(bphits, 1);