1 // Support routines for the -*- C++ -*- dynamic memory management.
2 // Copyright (C) 1997-2019 Free Software Foundation, Inc.
3 //
4 // This file is part of GCC.
5 //
6 // GCC is free software; you can redistribute it and/or modify
7 // it under the terms of the GNU General Public License as published by
8 // the Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 //
11 // GCC is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15 //
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
19
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
24
25 #include <bits/c++config.h>
26 #include <bits/exception_defines.h>
27 #include "new"
28
29 using std::new_handler;
30 using std::bad_alloc;
31
32 extern "C" void *malloc (std::size_t);
33
34 _GLIBCXX_WEAK_DEFINITION void *
operator new(std::size_t sz,const std::nothrow_t &)35 operator new (std::size_t sz, const std::nothrow_t&) noexcept
36 {
37 // _GLIBCXX_RESOLVE_LIB_DEFECTS
38 // 206. operator new(size_t, nothrow) may become unlinked to ordinary
39 // operator new if ordinary version replaced
40 __try
41 {
42 return ::operator new(sz);
43 }
44 __catch (...)
45 {
46 return nullptr;
47 }
48 }
49