--- old/src/share/vm/memory/allocation.cpp 2016-02-10 20:39:41.000000000 +0100 +++ new/src/share/vm/memory/allocation.cpp 2016-02-10 20:39:41.000000000 +0100 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1997, 2016, 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 @@ -664,64 +664,6 @@ // 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 []"); -} - void AllocatedObj::print() const { print_on(tty); } void AllocatedObj::print_value() const { print_value_on(tty); }