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1 // Support routines for the -*- C++ -*- dynamic memory management.
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2 // Copyright (C) 1997-2020 Free Software Foundation, Inc.
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3 //
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4 // This file is part of GCC.
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5 //
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6 // GCC is free software; you can redistribute it and/or modify
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7 // it under the terms of the GNU General Public License as published by
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8 // the Free Software Foundation; either version 3, or (at your option)
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9 // any later version.
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10 //
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11 // GCC is distributed in the hope that it will be useful,
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12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 // GNU General Public License for more details.
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15 //
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16 // Under Section 7 of GPL version 3, you are granted additional
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17 // permissions described in the GCC Runtime Library Exception, version
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18 // 3.1, as published by the Free Software Foundation.
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19
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20 // You should have received a copy of the GNU General Public License and
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21 // a copy of the GCC Runtime Library Exception along with this program;
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22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 // <http://www.gnu.org/licenses/>.
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24
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25 #include <bits/c++config.h>
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26 #include <bits/exception_defines.h>
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27 #include "new"
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28
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29 using std::new_handler;
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30 using std::bad_alloc;
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31
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32 extern "C" void *malloc (std::size_t);
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33
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34 _GLIBCXX_WEAK_DEFINITION void *
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35 operator new (std::size_t sz, const std::nothrow_t&) noexcept
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36 {
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37 // _GLIBCXX_RESOLVE_LIB_DEFECTS
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38 // 206. operator new(size_t, nothrow) may become unlinked to ordinary
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39 // operator new if ordinary version replaced
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40 __try
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41 {
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42 return ::operator new(sz);
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43 }
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44 __catch (...)
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45 {
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46 return nullptr;
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47 }
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48 }
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