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array (at): Remove constexpr when -fno-exceptions. 

2011-07-25  Benjamin Kosnik  <bkoz@redhat.com>

	* include/std/array (at): Remove constexpr when -fno-exceptions.
	* testsuite/23_containers/array/at_neg.cc: Test.

From-SVN: r176780
This commit is contained in:
Benjamin Kosnik 2011-07-26 04:21:57 +00:00 committed by Benjamin Kosnik
parent 104fcc7aec
commit 9bc13c238d
3 changed files with 44 additions and 6 deletions
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5
libstdc++-v3/ChangeLog
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@ -1,3 +1,8 @@
2011-07-25 Benjamin Kosnik <bkoz@redhat.com>
* include/std/array (at): Remove constexpr when -fno-exceptions.
* testsuite/23_containers/array/at_neg.cc: Test.
2011-07-25 Paolo Carlini <paolo.carlini@oracle.com> 2011-07-25 Paolo Carlini <paolo.carlini@oracle.com>
Nathan Ridge <zeratul976@hotmail.com> Nathan Ridge <zeratul976@hotmail.com>

17
libstdc++-v3/include/std/array
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@ -163,16 +163,21 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
return _M_instance[__n]; return _M_instance[__n];
} }
#ifdef __EXCEPTIONS
constexpr const_reference constexpr const_reference
at(size_type __n) const at(size_type __n) const
{ {
return __n < _Nm ? _M_instance[__n] : return __n < _Nm ?
#ifdef __EXCEPTIONS _M_instance[__n] : throw out_of_range(__N("array::at"));
throw out_of_range(__N("array::at"));
#else
_M_instance[0];
#endif
} }
#else
const_reference
at(size_type __n) const
{
return __n < _Nm ?
_M_instance[__n] : __throw_out_of_range(__N("array::at"));
}
#endif
reference reference
front() front()

28
libstdc++-v3/testsuite/23_containers/array/at_neg.cc Normal file
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@ -0,0 +1,28 @@
// { dg-do run { xfail *-*-* } }
// { dg-options "-std=gnu++0x -fno-exceptions" }
// Copyright (C) 2011 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 Pred 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 <array>
int main()
{
std::array<int, 3> a{{1, 2, 3}};
auto i = a.at(4); // expected behavior is to either throw or abort
return 0;
}