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exception: Include nested_exception.h in C++0x mode.

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2009-05-12  Jonathan Wakely  <jwakely.gcc@gmail.com>

	* libsupc++/exception: Include nested_exception.h in C++0x mode.
	* libsupc++/nested_exception.h: New.
	* libsupc++/Makefile.am: Add new header.
	* libsupc++/Makefile.in: Regenerate.
	* testsuite/18_support/nested_exception/rethrow_nested.cc: New.
	* testsuite/18_support/nested_exception/throw_with_nested.cc: New.
	* testsuite/18_support/nested_exception/cons.cc: New.
	* testsuite/18_support/nested_exception/nested_ptr.cc: New.
	* testsuite/18_support/nested_exception/rethrow_if_nested.cc: New.
	* doc/xml/manual/status_cxx200x.xml: Adjust.

From-SVN: r147446
This commit is contained in:
Jonathan Wakely 2009-05-12 21:08:00 +00:00 committed by Jonathan Wakely
parent 704bf7c8ae
commit 182da14a62
11 changed files with 560 additions and 4 deletions
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13
libstdc++-v3/ChangeLog
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@ -1,3 +1,16 @@
2009-05-12 Jonathan Wakely <jwakely.gcc@gmail.com>
* libsupc++/exception: Include nested_exception.h in C++0x mode.
* libsupc++/nested_exception.h: New.
* libsupc++/Makefile.am: Add new header.
* libsupc++/Makefile.in: Regenerate.
* testsuite/18_support/nested_exception/rethrow_nested.cc: New.
* testsuite/18_support/nested_exception/throw_with_nested.cc: New.
* testsuite/18_support/nested_exception/cons.cc: New.
* testsuite/18_support/nested_exception/nested_ptr.cc: New.
* testsuite/18_support/nested_exception/rethrow_if_nested.cc: New.
* doc/xml/manual/status_cxx200x.xml: Adjust.
2009-05-07 Paolo Carlini <paolo.carlini@oracle.com>
* include/ext/throw_allocator.h: Remove redundante include.

3
libstdc++-v3/doc/xml/manual/status_cxx200x.xml
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@ -235,10 +235,9 @@ particular release.
<entry></entry>
</row>
<row>
<?dbhtml bgcolor="#C8B0B0" ?>
<entry>18.8.6</entry>
<entry>Class <code>nested_exception</code></entry>
<entry>N</entry>
<entry>Y</entry>
<entry></entry>
</row>
<row>

2
libstdc++-v3/libsupc++/Makefile.am
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@ -33,7 +33,7 @@ noinst_LTLIBRARIES = libsupc++convenience.la
headers = \
exception new typeinfo cxxabi.h cxxabi-forced.h exception_defines.h \
initializer_list exception_ptr.h
initializer_list exception_ptr.h nested_exception.h
if GLIBCXX_HOSTED
c_sources = \

2
libstdc++-v3/libsupc++/Makefile.in
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@ -367,7 +367,7 @@ toolexeclib_LTLIBRARIES = libsupc++.la
noinst_LTLIBRARIES = libsupc++convenience.la
headers = \
exception new typeinfo cxxabi.h cxxabi-forced.h exception_defines.h \
initializer_list exception_ptr.h
initializer_list exception_ptr.h nested_exception.h
@GLIBCXX_HOSTED_TRUE@c_sources = \
@GLIBCXX_HOSTED_TRUE@ cp-demangle.c

1
libstdc++-v3/libsupc++/exception
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@ -146,6 +146,7 @@ _GLIBCXX_END_NAMESPACE
#if (defined(__GXX_EXPERIMENTAL_CXX0X__) \
&& defined(_GLIBCXX_ATOMIC_BUILTINS_4))
#include <exception_ptr.h>
#include <nested_exception.h>
#endif
#endif

177
libstdc++-v3/libsupc++/nested_exception.h Normal file
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@ -0,0 +1,177 @@
// Nested Exception support header (nested_exception class) for -*- C++ -*-
// Copyright (C) 2009 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.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file nested_exception.h
* This is an internal header file, included by other headers and the
* implementation. You should not attempt to use it directly.
*/
#ifndef _GLIBCXX_NESTED_EXCEPTION_H
#define _GLIBCXX_NESTED_EXCEPTION_H 1
#pragma GCC visibility push(default)
#ifndef __GXX_EXPERIMENTAL_CXX0X__
# include <c++0x_warning.h>
#else
#include <bits/c++config.h>
#if !defined(_GLIBCXX_ATOMIC_BUILTINS_4)
# error This platform does not support exception propagation.
#endif
extern "C++" {
namespace std
{
/**
* @addtogroup exceptions
* @{
*/
/// nested_exception
class nested_exception
{
public:
nested_exception() throw() : _M_ptr(current_exception()) { }
nested_exception(const nested_exception&) throw() = default;
nested_exception& operator=(const nested_exception&) throw() = default;
virtual ~nested_exception() = default;
void
rethrow_nested() const __attribute__ ((__noreturn__))
{ rethrow_exception(_M_ptr); }
exception_ptr
nested_ptr() const
{ return _M_ptr; }
private:
exception_ptr _M_ptr;
};
template<typename _Except>
struct _Nested_exception : public _Except, public nested_exception
{
explicit
_Nested_exception(_Except&& __ex)
: _Except(static_cast<_Except&&>(__ex))
{ }
};
template<typename _Ex>
struct __get_nested_helper
{
static const nested_exception*
_S_get(const _Ex& __ex)
{
return dynamic_cast<const nested_exception*>(&__ex);
}
};
template<typename _Ex>
struct __get_nested_helper<_Ex*>
{
static const nested_exception*
_S_get(const _Ex* __ex)
{
return dynamic_cast<const nested_exception*>(__ex);
}
};
template<typename _Ex>
inline const nested_exception*
__get_nested_exception(const _Ex& __ex)
{
return __get_nested_helper<_Ex>::_S_get(__ex);
}
template<typename _Ex>
void
__throw_with_nested(_Ex&&, const nested_exception* = 0)
__attribute__ ((__noreturn__));
template<typename _Ex>
void
__throw_with_nested(_Ex&&, ...) __attribute__ ((__noreturn__));
// This function should never be called, but is needed to avoid a warning
// about ambiguous base classes when instantiating throw_with_nested<_Ex>()
// with a type that has an accessible nested_exception base.
template<typename _Ex>
inline void
__throw_with_nested(_Ex&& __ex, const nested_exception* = 0)
{
throw __ex;
}
template<typename _Ex>
inline void
__throw_with_nested(_Ex&& __ex, ...)
{
throw _Nested_exception<_Ex>(static_cast<_Ex&&>(__ex));
}
template<typename _Ex>
void
throw_with_nested(_Ex __ex) __attribute__ ((__noreturn__));
template<typename _Ex>
inline void
throw_with_nested(_Ex __ex)
{
if (__get_nested_exception(__ex))
throw __ex;
__throw_with_nested(static_cast<_Ex&&>(__ex), &__ex);
}
template<typename _Ex>
inline void
rethrow_if_nested(const _Ex& __ex)
{
if (const nested_exception* __nested = __get_nested_exception(__ex))
__nested->rethrow_nested();
}
// see n2619
inline void
rethrow_if_nested(const nested_exception& __ex)
{
__ex.rethrow_nested();
}
// @} group exceptions
} // namespace std
} // extern "C++"
#endif // __GXX_EXPERIMENTAL_CXX0X__
#pragma GCC visibility pop
#endif // _GLIBCXX_NESTED_EXCEPTION_H

53
libstdc++-v3/testsuite/18_support/nested_exception/cons.cc Normal file
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@ -0,0 +1,53 @@
// { dg-options "-std=gnu++0x" }
// { dg-require-atomic-builtins "" }
// Copyright (C) 2009 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/>.
#include <exception>
#include <testsuite_hooks.h>
void test01()
{
bool test __attribute__((unused)) = true;
std::nested_exception e;
VERIFY( !e.nested_ptr() );
}
void test02()
{
bool test __attribute__((unused)) = true;
try
{
throw 42;
}
catch (...)
{
std::nested_exception e;
VERIFY( e.nested_ptr() == std::current_exception() );
}
}
int main()
{
test01();
test02();
return 0;
}

71
libstdc++-v3/testsuite/18_support/nested_exception/nested_ptr.cc Normal file
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@ -0,0 +1,71 @@
// { dg-options "-std=gnu++0x" }
// { dg-require-atomic-builtins "" }
// Copyright (C) 2009 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/>.
#include <exception>
#include <testsuite_hooks.h>
void test01()
{
bool test __attribute__((unused)) = true;
try
{
throw std::nested_exception();
}
catch (const std::nested_exception& e)
{
VERIFY( !e.nested_ptr() );
}
}
void test02()
{
bool test __attribute__((unused)) = true;
try
{
throw 42;
}
catch (...)
{
try
{
throw std::nested_exception();
}
catch (const std::nested_exception& e)
{
try
{
std::rethrow_exception( e.nested_ptr() );
}
catch(const int& i)
{
VERIFY( i == 42 );
}
}
}
}
int main()
{
test01();
test02();
return 0;
}

110
libstdc++-v3/testsuite/18_support/nested_exception/rethrow_if_nested.cc Normal file
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@ -0,0 +1,110 @@
// { dg-options "-std=gnu++0x" }
// { dg-require-atomic-builtins "" }
// Copyright (C) 2009 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/>.
#include <exception>
#include <testsuite_hooks.h>
struct derived : std::nested_exception { };
struct base { virtual ~base() = default; };
struct derived2 : base, std::nested_exception { };
void test01()
{
bool test __attribute__((unused)) = false;
try
{
throw 42;
}
catch (...)
{
derived d;
try
{
std::rethrow_if_nested(d);
}
catch (const int& i)
{
test = true;
VERIFY( i == 42 );
}
}
VERIFY( test );
}
void test02()
{
bool test __attribute__((unused)) = false;
try
{
throw base();
}
catch (const base& b)
{
std::rethrow_if_nested(b);
test = true;
}
VERIFY( test );
}
void test03()
{
bool test __attribute__((unused)) = false;
try
{
throw 42;
}
catch (...)
{
try
{
throw derived2();
}
catch (const base& b)
{
try
{
std::rethrow_if_nested(b);
}
catch (const int& i)
{
VERIFY( i == 42 );
test = true;
}
}
}
VERIFY( test );
}
int main()
{
test01();
test02();
test03();
return 0;
}

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libstdc++-v3/testsuite/18_support/nested_exception/rethrow_nested.cc Normal file
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@ -0,0 +1,53 @@
// { dg-options "-std=gnu++0x" }
// { dg-require-atomic-builtins "" }
// Copyright (C) 2009 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/>.
#include <exception>
#include <testsuite_hooks.h>
void test01()
{
bool test __attribute__((unused)) = false;
try
{
try
{
throw 42;
}
catch (...)
{
std::nested_exception e;
e.rethrow_nested();
}
}
catch(const int& i)
{
test = true;
VERIFY( i == 42 );
}
VERIFY( test );
}
int main()
{
test01();
return 0;
}

79
libstdc++-v3/testsuite/18_support/nested_exception/throw_with_nested.cc Normal file
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@ -0,0 +1,79 @@
// { dg-options "-std=gnu++0x" }
// { dg-require-atomic-builtins "" }
// Copyright (C) 2009 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/>.
#include <exception>
#include <testsuite_hooks.h>
struct derived : std::nested_exception { };
struct not_derived { virtual ~not_derived() = default; };
void test01()
{
bool test __attribute__((unused)) = false;
try
{
std::throw_with_nested(derived());
}
catch (const std::nested_exception& e)
{
VERIFY( !e.nested_ptr() );
try
{
throw;
}
catch (const derived&)
{
test = true;
}
}
VERIFY( test );
}
void test02()
{
bool test __attribute__((unused)) = false;
try
{
std::throw_with_nested(not_derived());
}
catch (const std::nested_exception& e)
{
VERIFY( !e.nested_ptr() );
try
{
throw;
}
catch (const not_derived&)
{
test = true;
}
}
VERIFY( test );
}
int main()
{
test01();
test02();
return 0;
}