diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Debugger-debuggees-03.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Debugger-debuggees-03.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+// Debugger hooks fire based on debuggees.
+
+var g1 = newGlobal();
+g1.eval("var g2 = newGlobal('same-compartment')");
+var g2 = g1.g2;
+g1.eval("function f() { debugger; g2.g(); }");
+g2.eval("function g() { debugger; }");
+
+var log;
+var dbg = new Debugger;
+dbg.onDebuggerStatement = function (frame) { log += frame.callee.name; };
+
+// No debuggees: onDebuggerStatement is not called.
+log = '';
+g1.f();
+assertEq(log, '');
+
+// Add a debuggee and check that the handler is called.
+var g1w = dbg.addDebuggee(g1);
+log = '';
+g1.f();
+assertEq(log, 'f');
+
+// Two debuggees, two onDebuggerStatement calls.
+dbg.addDebuggee(g2);
+log = '';
+g1.f();
+assertEq(log, 'fg');
+
+// After a debuggee is removed, it no longer calls hooks.
+assertEq(dbg.removeDebuggee(g1w), undefined);
+log = '';
+g1.f();
+assertEq(log, 'g');