src/v8/test/webkit/duplicate-param-gc-crash.js

// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1.  Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 2.  Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

description(
'Tests to ensure that activations are built correctly in the face of duplicate parameter names and do not cause crashes.'
);

function gc()
{
    if (this.GCController)
        GCController.collect();
    else
        for (var i = 0; i < 10000; ++i) // Allocate a sufficient number of objects to force a GC.
            ({});
}

function eatRegisters(param)
{
    if (param > 10)
        return;
    eatRegisters(param + 1);
}

function test1(a, b, b, b, b, b, b) {
    return function() {
        return a[0];
    }
}

var test1Closure = test1(["success"]);

var extra = test1("success");
eatRegisters(0);
gc();

shouldBe('test1Closure()', '"success"');

function test2(a, a, a, a, a, a, b) {
    return function() {
        return b[0];
    }
}

var test2Closure = test2("success", "success", "success", "success", "success", "success", ["success"]);
extra =  test2("success", "success", "success", "success", "success", "success", ["success"]);

eatRegisters(0);
gc();

shouldBe('test2Closure()', '"success"');