stabilize store merging
[official-gcc.git] / libstdc++-v3 / libsupc++ / eh_exception.cc
blob11f3e133b0853a2119c6b848c70e9bbee788a674
1 // -*- C++ -*- std::exception implementation.
2 // Copyright (C) 1994-2017 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.
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.
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.
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/>.
25 #include "typeinfo"
26 #include "exception"
27 #include <cxxabi.h>
29 std::exception::~exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT { }
31 std::bad_exception::~bad_exception() _GLIBCXX_TXN_SAFE_DYN
32 _GLIBCXX_USE_NOEXCEPT
33 { }
35 abi::__forced_unwind::~__forced_unwind() throw() { }
37 abi::__foreign_exception::~__foreign_exception() throw() { }
39 const char*
40 std::exception::what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT
42 // NB: Another elegant option would be returning typeid(*this).name()
43 // and not overriding what() in bad_exception, bad_alloc, etc. In
44 // that case, however, mangled names would be returned, PR 14493.
45 return "std::exception";
48 const char*
49 std::bad_exception::what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT
51 return "std::bad_exception";
54 // Transactional clones for the destructors and what().
55 // what() is effectively transaction_pure, but we do not want to annotate it
56 // as such; thus, we call exactly the respective nontransactional function.
57 extern "C" {
59 void
60 _ZGTtNKSt9exceptionD1Ev(const std::exception*)
61 { }
63 const char*
64 _ZGTtNKSt9exception4whatEv(const std::exception* that)
66 // We really want the non-virtual call here. We already executed the
67 // indirect call representing the virtual call, and the TM runtime or the
68 // compiler resolved it to this transactional clone. In the clone, we want
69 // to do the same as for the nontransactional original, so we just call it.
70 return that->std::exception::what();
73 void
74 _ZGTtNKSt13bad_exceptionD1Ev(
75 const std::bad_exception*)
76 { }
78 const char*
79 _ZGTtNKSt13bad_exception4whatEv(
80 const std::bad_exception* that)
82 // Also see _ZGTtNKSt9exception4whatEv.
83 return that->std::bad_exception::what();