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libstdc++/69945 Add __gnu_cxx::__freeres hook

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PR libstdc++/69945
	* config/abi/pre/gnu.ver: Add new symbol.
	* libsupc++/eh_alloc.cc (__gnu_cxx::__freeres): Define.
	* testsuite/18_support/free_eh_pool.cc: New test.

From-SVN: r234465
This commit is contained in:
Jonathan Wakely 2016-03-24 18:13:40 +00:00 • committed by Jonathan Wakely
parent 52228180f1
commit 00e6c25ac8
4 changed files with 63 additions and 0 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,3 +1,10 @@
2016-03-24 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/69945
* config/abi/pre/gnu.ver: Add new symbol.
* libsupc++/eh_alloc.cc (__gnu_cxx::__freeres): Define.
* testsuite/18_support/free_eh_pool.cc: New test.
2016-03-23 Bernd Edlinger <bernd.edlinger@hotmail.de> 2016-03-23 Bernd Edlinger <bernd.edlinger@hotmail.de>
* include/Makefile.am (install-freestanding-headers): Add * include/Makefile.am (install-freestanding-headers): Add

2
libstdc++-v3/config/abi/pre/gnu.ver
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@ -2148,6 +2148,8 @@ CXXABI_1.3.10 {
_ZGTtNKSt13bad_exceptionD1Ev; _ZGTtNKSt13bad_exceptionD1Ev;
_ZGTtNKSt13bad_exception4whatEv; _ZGTtNKSt13bad_exception4whatEv;
_ZN9__gnu_cxx9__freeresEv;
} CXXABI_1.3.9; } CXXABI_1.3.9;
# Symbols in the support library (libsupc++) supporting transactional memory. # Symbols in the support library (libsupc++) supporting transactional memory.

19
libstdc++-v3/libsupc++/eh_alloc.cc
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@ -73,6 +73,10 @@ using namespace __cxxabiv1;
# define EMERGENCY_OBJ_COUNT 4 # define EMERGENCY_OBJ_COUNT 4
#endif #endif
namespace __gnu_cxx
{
void __freeres();
}
namespace namespace
{ {
@ -106,6 +110,8 @@ namespace
// to implement in_pool. // to implement in_pool.
char *arena; char *arena;
std::size_t arena_size; std::size_t arena_size;
friend void __gnu_cxx::__freeres();
}; };
pool::pool() pool::pool()
@ -244,6 +250,19 @@ namespace
pool emergency_pool; pool emergency_pool;
} }
namespace __gnu_cxx
{
void
__freeres()
{
if (emergency_pool.arena)
{
::free(emergency_pool.arena);
emergency_pool.arena = 0;
}
}
}
extern "C" void * extern "C" void *
__cxxabiv1::__cxa_allocate_exception(std::size_t thrown_size) _GLIBCXX_NOTHROW __cxxabiv1::__cxa_allocate_exception(std::size_t thrown_size) _GLIBCXX_NOTHROW
{ {

35
libstdc++-v3/testsuite/18_support/free_eh_pool.cc Normal file
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@ -0,0 +1,35 @@
// Copyright (C) 2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do run }
namespace __gnu_cxx {
void __freeres();
}
struct X {
~X() {
__gnu_cxx::__freeres();
}
};
X x;
int
main()
{
}