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06bd10fb | 1 | // Support routines for the -*- C++ -*- dynamic memory management. |
aa118a03 | 2 | // Copyright (C) 1997-2014 Free Software Foundation, Inc. |
06bd10fb | 3 | // |
cbecceb9 | 4 | // This file is part of GCC. |
06bd10fb | 5 | // |
cbecceb9 | 6 | // GCC is free software; you can redistribute it and/or modify |
06bd10fb | 7 | // it under the terms of the GNU General Public License as published by |
748086b7 | 8 | // the Free Software Foundation; either version 3, or (at your option) |
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9 | // any later version. |
10 | // | |
cbecceb9 | 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 |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | // | |
748086b7 JJ |
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/>. | |
06bd10fb | 24 | |
34a133a8 | 25 | #include <bits/c++config.h> |
7c3e9502 | 26 | #include <bits/exception_defines.h> |
b967bf25 | 27 | #include "new" |
e2c09482 | 28 | |
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29 | using std::new_handler; |
30 | using std::bad_alloc; | |
31 | ||
6b76f569 | 32 | extern "C" void *malloc (std::size_t); |
06bd10fb | 33 | |
5cc78150 | 34 | _GLIBCXX_WEAK_DEFINITION void * |
578f0234 | 35 | operator new (std::size_t sz, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT |
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36 | { |
37 | void *p; | |
38 | ||
39 | /* malloc (0) is unpredictable; avoid it. */ | |
40 | if (sz == 0) | |
41 | sz = 1; | |
42 | p = (void *) malloc (sz); | |
43 | while (p == 0) | |
44 | { | |
dca77a8a | 45 | new_handler handler = std::get_new_handler (); |
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46 | if (! handler) |
47 | return 0; | |
bbcfe54a | 48 | __try |
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49 | { |
50 | handler (); | |
51 | } | |
bbcfe54a | 52 | __catch(const bad_alloc&) |
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53 | { |
54 | return 0; | |
55 | } | |
56 | ||
57 | p = (void *) malloc (sz); | |
58 | } | |
59 | ||
60 | return p; | |
61 | } |