bc9efeab61
libstdc++-v3: PR libstdc++/79190 * libsupc++/del_opa.cc (operator delete(void*, std::align_val_t)) [!_GLIBCXX_HAVE_ALIGNED_ALLOC && !_GLIBCXX_HAVE_POSIX_MEMALIGN && !_GLIBCXX_HAVE_MEMALIGN && !_GLIBCXX_HAVE__ALIGNED_MALLOC]: Retrieve original pointer value allocated by malloc. * libsupc++/new_opa.cc [!_GLIBCXX_HAVE_ALIGNED_ALLOC && !_GLIBCXX_HAVE_POSIX_MEMALIGN && !_GLIBCXX_HAVE_MEMALIGN && !_GLIBCXX_HAVE__ALIGNED_MALLOC] (aligned_alloc(size_t, size_t)): Define, adjusting pointer value allocated by malloc and storing for retrieval by operator delete. gcc/testsuite: PR libstdc++/79190 * g++.dg/cpp1z/aligned-new3.C: Replace operator new so behaviour matches replaced operator delete. From-SVN: r244933
59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
// Boilerplate support routines for -*- C++ -*- dynamic memory management.
|
|
|
|
// Copyright (C) 1997-2017 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of GCC.
|
|
//
|
|
// GCC is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
//
|
|
// GCC 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 for more details.
|
|
//
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
#include <bits/c++config.h>
|
|
|
|
#if !_GLIBCXX_HOSTED
|
|
// A freestanding C runtime may not provide "free" -- but there is no
|
|
// other reasonable way to implement "operator delete".
|
|
namespace std
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
extern "C" void free(void*);
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace
|
|
#else
|
|
# include <cstdlib>
|
|
#endif
|
|
|
|
#include "new"
|
|
|
|
// The sized deletes are defined in other files.
|
|
#pragma GCC diagnostic ignored "-Wsized-deallocation"
|
|
|
|
_GLIBCXX_WEAK_DEFINITION void
|
|
operator delete(void* ptr, std::align_val_t) _GLIBCXX_USE_NOEXCEPT
|
|
{
|
|
#if _GLIBCXX_HAVE_ALIGNED_ALLOC || _GLIBCXX_HAVE_POSIX_MEMALIGN \
|
|
|| _GLIBCXX_HAVE_MEMALIGN
|
|
std::free (ptr);
|
|
#elif _GLIBCXX_HAVE__ALIGNED_MALLOC
|
|
_aligned_free (ptr);
|
|
#else
|
|
if (ptr)
|
|
std::free (((void **) ptr)[-1]); // See aligned_alloc in new_opa.cc
|
|
#endif
|
|
}
|