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 // Debuggers with enabled onExceptionUnwind hooks should not be GC'd even if

 // they are otherwise unreachable.

 load(libdir + "asserts.js");

 var g = newGlobal();

 var actual = 0;

 var expected = 0;

 function f() {

     for (var i = 0; i < 20; i++) {

         var dbg = new Debugger(g);

         dbg.num = i;

         dbg.onExceptionUnwind = function (stack, exc) { actual += this.num; };

         expected += i;

     }

 }

 f();

 gc();

 assertThrowsValue(function () { g.eval("throw 'fit';"); }, "fit");

 assertEq(actual, expected);