60 lines
2.5 KiB
C++
60 lines
2.5 KiB
C++
/*
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* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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/////////////// Unit tests ///////////////
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#ifndef PRODUCT
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#include "oops/arrayOop.hpp"
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#include "oops/oop.inline.hpp"
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#include "utilities/globalDefinitions.hpp"
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bool arrayOopDesc::check_max_length_overflow(BasicType type) {
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julong length = max_array_length(type);
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julong bytes_per_element = type2aelembytes(type);
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julong bytes = length * bytes_per_element + header_size_in_bytes();
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return (julong)(size_t)bytes == bytes;
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}
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void arrayOopDesc::test_max_array_length() {
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assert(check_max_length_overflow(T_BOOLEAN), "size_t overflow for boolean array");
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assert(check_max_length_overflow(T_CHAR), "size_t overflow for char array");
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assert(check_max_length_overflow(T_FLOAT), "size_t overflow for float array");
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assert(check_max_length_overflow(T_DOUBLE), "size_t overflow for double array");
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assert(check_max_length_overflow(T_BYTE), "size_t overflow for byte array");
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assert(check_max_length_overflow(T_SHORT), "size_t overflow for short array");
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assert(check_max_length_overflow(T_INT), "size_t overflow for int array");
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assert(check_max_length_overflow(T_LONG), "size_t overflow for long array");
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assert(check_max_length_overflow(T_OBJECT), "size_t overflow for object array");
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assert(check_max_length_overflow(T_ARRAY), "size_t overflow for array array");
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assert(check_max_length_overflow(T_NARROWOOP), "size_t overflow for narrowOop array");
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// T_VOID and T_ADDRESS are not supported by max_array_length()
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}
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#endif //PRODUCT
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