test/script/basic/JDK-8137281.js

/*
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 * 
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 * 
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
 */

/**
 * JDK-8137281: OutOfMemoryError with large numeric keys in JSON.parse
 *
 * @test
 * @run
 */

function createObject(startKey, level1, level2) {
    var root = {};
    var key = startKey;
    for (var i = 0; i < level1; i++) {
        var child = {};
        for (var j = 0; j < level2; j++) {
            child[key++] = {};
        }
        root[key++] = child;
    }
    return root;
}

JSON.parse(JSON.stringify(createObject(500000, 20, 20)));
JSON.parse(JSON.stringify(createObject(1000000, 20, 20)));
JSON.parse(JSON.stringify(createObject(2000000, 20, 20)));
JSON.parse(JSON.stringify(createObject(4000000, 20, 20)));
JSON.parse(JSON.stringify(createObject(8000000, 20, 20)));
JSON.parse(JSON.stringify(createObject(16000000, 20, 20)));