/*

 * Copyright (c) 1997, 2014, 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"

#include "utilities/debug.hpp"

#include <new>

//--------------------------------------------------------------------------------------

// Non-product code

#ifndef PRODUCT

// The global operator new should never be called since it will usually indicate

// a memory leak.  Use CHeapObj as the base class of such objects to make it explicit

// that they're allocated on the C heap.

// Commented out in product version to avoid conflicts with third-party C++ native code.

//

// In C++98/03 the throwing new operators are defined with the following signature:

//

// void* operator new(std::size_tsize) throw(std::bad_alloc);

// void* operator new[](std::size_tsize) throw(std::bad_alloc);

//

// while all the other (non-throwing) new and delete operators are defined with an empty

// throw clause (i.e. "operator delete(void* p) throw()") which means that they do not

// throw any exceptions (see section 18.4 of the C++ standard).

//

// In the new C++11/14 standard, the signature of the throwing new operators was changed

// by completely omitting the throw clause (which effectively means they could throw any

// exception) while all the other new/delete operators where changed to have a 'nothrow'

// clause instead of an empty throw clause.

//

// Unfortunately, the support for exception specifications among C++ compilers is still

// very fragile. While some more strict compilers like AIX xlC or HP aCC reject to

// override the default throwing new operator with a user operator with an empty throw()

// clause, the MS Visual C++ compiler warns for every non-empty throw clause like

// throw(std::bad_alloc) that it will ignore the exception specification. The following

// operator definitions have been checked to correctly work with all currently supported

// compilers and they should be upwards compatible with C++11/14. Therefore

// PLEASE BE CAREFUL if you change the signature of the following operators!

static void * zero = (void *) 0;

void* operator new(size_t size) /* throw(std::bad_alloc) */ {

  fatal("Should not call global operator new");

  return zero;

}

void* operator new [](size_t size) /* throw(std::bad_alloc) */ {

  fatal("Should not call global operator new[]");

  return zero;

}

void* operator new(size_t size, const std::nothrow_t&  nothrow_constant) throw() {

  fatal("Should not call global operator new");

  return 0;

}

void* operator new [](size_t size, std::nothrow_t&  nothrow_constant) throw() {

  fatal("Should not call global operator new[]");

  return 0;

}

void operator delete(void* p) throw() {

  fatal("Should not call global delete");

}

void operator delete [](void* p) throw() {

  fatal("Should not call global delete []");

}

#endif // Non-product