Frame-eval-08.js - mozsearch

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// The arguments can escape from a function via a debugging hook.

var g = newGlobal({newCompartment: true});

var dbg = new Debugger(g);

// capture arguments object and test function

var args, testfn;

dbg.onDebuggerStatement = function (frame) {

    args = frame.eval("arguments").return;

    testfn = frame.eval("test").return;

};

g.eval("function f() { debugger; }");

g.eval("var test = " + function test(args) {

        assertEq(args.length, 3);

        assertEq(args[0], this);

        assertEq(args[1], f);

        assertEq(args[2].toString(), "[object Object]");

        return 42;

    } + ";");

g.eval("f(this, f, {});");

var cv = testfn.apply(null, [args]);

assertEq(cv.return, 42);