87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
// -*- C++ -*- std::exception implementation.
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// Copyright (C) 1994-2020 Free Software Foundation, Inc.
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//
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// This file is part of GCC.
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//
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// GCC is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// GCC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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#include "typeinfo"
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#include "exception"
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#include <cxxabi.h>
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std::exception::~exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT { }
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std::bad_exception::~bad_exception() _GLIBCXX_TXN_SAFE_DYN
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_GLIBCXX_USE_NOEXCEPT
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{ }
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abi::__forced_unwind::~__forced_unwind() throw() { }
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abi::__foreign_exception::~__foreign_exception() throw() { }
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const char*
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std::exception::what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT
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{
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// NB: Another elegant option would be returning typeid(*this).name()
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// and not overriding what() in bad_exception, bad_alloc, etc. In
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// that case, however, mangled names would be returned, PR 14493.
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return "std::exception";
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}
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const char*
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std::bad_exception::what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT
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{
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return "std::bad_exception";
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}
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// Transactional clones for the destructors and what().
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// what() is effectively transaction_pure, but we do not want to annotate it
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// as such; thus, we call exactly the respective nontransactional function.
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extern "C" {
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void
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_ZGTtNKSt9exceptionD1Ev(const std::exception*)
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{ }
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const char*
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_ZGTtNKSt9exception4whatEv(const std::exception* that)
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{
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// We really want the non-virtual call here. We already executed the
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// indirect call representing the virtual call, and the TM runtime or the
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// compiler resolved it to this transactional clone. In the clone, we want
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// to do the same as for the nontransactional original, so we just call it.
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return that->std::exception::what();
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}
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void
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_ZGTtNKSt13bad_exceptionD1Ev(
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const std::bad_exception*)
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{ }
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const char*
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_ZGTtNKSt13bad_exception4whatEv(
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const std::bad_exception* that)
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{
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// Also see _ZGTtNKSt9exception4whatEv.
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return that->std::bad_exception::what();
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}
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}
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