/*
* Copyright (c) 1997, 2012, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
/////////////// Unit tests ///////////////
#ifndef PRODUCT
#include "oops/arrayOop.hpp"
#include "oops/oop.inline.hpp"
#include "utilities/globalDefinitions.hpp"
bool arrayOopDesc::check_max_length_overflow(BasicType type) {
julong length = max_array_length(type);
julong bytes_per_element = type2aelembytes(type);
julong bytes = length * bytes_per_element + header_size_in_bytes();
return (julong)(size_t)bytes == bytes;
}
void arrayOopDesc::test_max_array_length() {
assert(check_max_length_overflow(T_BOOLEAN), "size_t overflow for boolean array");
assert(check_max_length_overflow(T_CHAR), "size_t overflow for char array");
assert(check_max_length_overflow(T_FLOAT), "size_t overflow for float array");
assert(check_max_length_overflow(T_DOUBLE), "size_t overflow for double array");
assert(check_max_length_overflow(T_BYTE), "size_t overflow for byte array");
assert(check_max_length_overflow(T_SHORT), "size_t overflow for short array");
assert(check_max_length_overflow(T_INT), "size_t overflow for int array");
assert(check_max_length_overflow(T_LONG), "size_t overflow for long array");
assert(check_max_length_overflow(T_OBJECT), "size_t overflow for object array");
assert(check_max_length_overflow(T_ARRAY), "size_t overflow for array array");
assert(check_max_length_overflow(T_NARROWOOP), "size_t overflow for narrowOop array");
// T_VOID and T_ADDRESS are not supported by max_array_length()
}
#endif //PRODUCT