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re PR libstdc++/53080 (tuple interface to std::array doesn't check bounds) 

2012-04-23  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/53080
	* include/std/array (tuple_element, get): static_assert I < N.
	* testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
	New.
	* testsuite/23_containers/array/tuple_interface/get_neg.cc: Likewise.
	* testsuite/23_containers/array/tuple_interface/tuple_element.cc: Fix.

From-SVN: r186702
This commit is contained in:
Paolo Carlini 2012-04-23 12:26:43 +00:00 committed by Paolo Carlini
parent ff5be0e34e
commit 9771644a91
5 changed files with 91 additions and 20 deletions
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9
libstdc++-v3/ChangeLog
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@ -1,3 +1,12 @@
2012-04-23 Paolo Carlini <paolo.carlini@oracle.com>
PR libstdc++/53080
* include/std/array (tuple_element, get): static_assert I < N.
* testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
New.
* testsuite/23_containers/array/tuple_interface/get_neg.cc: Likewise.
* testsuite/23_containers/array/tuple_interface/tuple_element.cc: Fix.
2012-04-23 Chris Jefferson <chris@bubblescope.net>
PR testsuite/53046

25
libstdc++-v3/include/std/array
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@ -1,6 +1,7 @@
// <array> -*- C++ -*-
// Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
// 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
@ -261,23 +262,35 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
class tuple_element;
template<std::size_t _Int, typename _Tp, std::size_t _Nm>
struct tuple_element<_Int, array<_Tp, _Nm> >
{ typedef _Tp type; };
struct tuple_element<_Int, array<_Tp, _Nm>>
{
static_assert(_Int < _Nm, "index is out of bounds");
typedef _Tp type;
};
template<std::size_t _Int, typename _Tp, std::size_t _Nm>
constexpr _Tp&
get(array<_Tp, _Nm>& __arr) noexcept
{ return __arr._M_instance[_Int]; }
{
static_assert(_Int < _Nm, "index is out of bounds");
return __arr._M_instance[_Int];
}
template<std::size_t _Int, typename _Tp, std::size_t _Nm>
constexpr _Tp&&
get(array<_Tp, _Nm>&& __arr) noexcept
{ return std::move(get<_Int>(__arr)); }
{
static_assert(_Int < _Nm, "index is out of bounds");
return std::move(get<_Int>(__arr));
}
template<std::size_t _Int, typename _Tp, std::size_t _Nm>
constexpr const _Tp&
get(const array<_Tp, _Nm>& __arr) noexcept
{ return __arr._M_instance[_Int]; }
{
static_assert(_Int < _Nm, "index is out of bounds");
return __arr._M_instance[_Int];
}
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

32
libstdc++-v3/testsuite/23_containers/array/tuple_interface/get_neg.cc Normal file
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@ -0,0 +1,32 @@
// { dg-options "-std=gnu++11" }
// { dg-do compile }
// Copyright (C) 2012 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 <array>
std::array<int, 1> a{};
const std::array<int, 1> ca{};
int n1 = std::get<1>(a);
int n2 = std::get<1>(std::move(a));
int n3 = std::get<1>(ca);
// { dg-error "static assertion failed" "" { target *-*-* } 275 }
// { dg-error "static assertion failed" "" { target *-*-* } 283 }
// { dg-error "static assertion failed" "" { target *-*-* } 291 }

20
libstdc++-v3/testsuite/23_containers/array/tuple_interface/tuple_element.cc
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@ -1,6 +1,6 @@
// { dg-options "-std=gnu++0x" }
//
// Copyright (C) 2011 Free Software Foundation, Inc.
// Copyright (C) 2011, 2012 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
@ -27,19 +27,11 @@ test01()
bool test __attribute__((unused)) = true;
using namespace std;
{
const size_t len = 3;
typedef array<int, len> array_type;
VERIFY( (is_same<tuple_element<0, array_type>::type, int>::value == true) );
VERIFY( (is_same<tuple_element<1, array_type>::type, int>::value == true) );
VERIFY( (is_same<tuple_element<2, array_type>::type, int>::value == true) );
}
{
const size_t len = 0;
typedef array<int, len> array_type;
VERIFY( (is_same<tuple_element<0, array_type>::type, int>::value == true) );
}
const size_t len = 3;
typedef array<int, len> array_type;
VERIFY( (is_same<tuple_element<0, array_type>::type, int>::value == true) );
VERIFY( (is_same<tuple_element<1, array_type>::type, int>::value == true) );
VERIFY( (is_same<tuple_element<2, array_type>::type, int>::value == true) );
}
int main()

25
libstdc++-v3/testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc Normal file
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@ -0,0 +1,25 @@
// { dg-options "-std=gnu++11" }
// { dg-do compile }
// Copyright (C) 2012 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 <array>
typedef std::tuple_element<1, std::array<int, 1>>::type type;
// { dg-error "static assertion failed" "" { target *-*-* } 267 }