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author | redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-08-21 15:14:27 +0000 |
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committer | redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-08-21 15:14:27 +0000 |
commit | cd4d3be9001fb6155ef0d97c4cd8889a9254bb7c (patch) | |
tree | 122232e29c3a90ca99d53e083f662d9f3949f55a /libstdc++-v3 | |
parent | 6b7c5f4350c963cda949bc9070f595167d5f294c (diff) | |
download | gcc-cd4d3be9001fb6155ef0d97c4cd8889a9254bb7c.tar.gz |
PR libstdc++/81912 make std::__iterator_category constexpr
PR libstdc++/81912
* include/bits/stl_iterator_base_types.h (__iterator_category): Add
constexpr for C++11 and later.
* testsuite/24_iterators/container_access.cc: Add target selector.
* testsuite/24_iterators/range_access.cc: Fix clause number in
comment.
* testsuite/24_iterators/range_access_cpp14.cc: Likewise.
* testsuite/24_iterators/range_access_cpp17.cc: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@251234 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3')
6 files changed, 73 insertions, 5 deletions
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index 9f5bfa0db6e..72c53cc5879 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,14 @@ +2017-08-21 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/81912 + * include/bits/stl_iterator_base_types.h (__iterator_category): Add + constexpr for C++11 and later. + * testsuite/24_iterators/container_access.cc: Add target selector. + * testsuite/24_iterators/range_access.cc: Fix clause number in + comment. + * testsuite/24_iterators/range_access_cpp14.cc: Likewise. + * testsuite/24_iterators/range_access_cpp17.cc: New. + 2017-08-21 Richard Biener <rguenther@suse.de> * testsuite/libstdc++-prettyprinters/prettyprinters.exp: Run all diff --git a/libstdc++-v3/include/bits/stl_iterator_base_types.h b/libstdc++-v3/include/bits/stl_iterator_base_types.h index 24ed016b91e..d2c36ed2ac3 100644 --- a/libstdc++-v3/include/bits/stl_iterator_base_types.h +++ b/libstdc++-v3/include/bits/stl_iterator_base_types.h @@ -200,7 +200,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION * sugar for internal library use only. */ template<typename _Iter> - inline typename iterator_traits<_Iter>::iterator_category + inline _GLIBCXX_CONSTEXPR + typename iterator_traits<_Iter>::iterator_category __iterator_category(const _Iter&) { return typename iterator_traits<_Iter>::iterator_category(); } diff --git a/libstdc++-v3/testsuite/24_iterators/container_access.cc b/libstdc++-v3/testsuite/24_iterators/container_access.cc index 7f60d2bda48..b8d0e80a2de 100644 --- a/libstdc++-v3/testsuite/24_iterators/container_access.cc +++ b/libstdc++-v3/testsuite/24_iterators/container_access.cc @@ -1,4 +1,4 @@ -// { dg-do run } +// { dg-do run { target c++1z } } // { dg-options "-std=gnu++17" } // Copyright (C) 2015-2017 Free Software Foundation, Inc. @@ -62,7 +62,6 @@ test03() static_assert(s == 3); constexpr auto e = std::empty(il3); static_assert(!e); - } void diff --git a/libstdc++-v3/testsuite/24_iterators/range_access.cc b/libstdc++-v3/testsuite/24_iterators/range_access.cc index 6ae5499b0d8..5b978b630e1 100644 --- a/libstdc++-v3/testsuite/24_iterators/range_access.cc +++ b/libstdc++-v3/testsuite/24_iterators/range_access.cc @@ -17,7 +17,7 @@ // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. -// 24.6.5, range access [iterator.range] +// C++ 2011 24.6.5, range access [iterator.range] #include <iterator> diff --git a/libstdc++-v3/testsuite/24_iterators/range_access_cpp14.cc b/libstdc++-v3/testsuite/24_iterators/range_access_cpp14.cc index 138b189aaa6..eb75d92a463 100644 --- a/libstdc++-v3/testsuite/24_iterators/range_access_cpp14.cc +++ b/libstdc++-v3/testsuite/24_iterators/range_access_cpp14.cc @@ -17,7 +17,7 @@ // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. -// 24.6.5, range access [iterator.range] +// C++ 2014 24.7, range access [iterator.range] #include <iterator> #include <vector> diff --git a/libstdc++-v3/testsuite/24_iterators/range_access_cpp17.cc b/libstdc++-v3/testsuite/24_iterators/range_access_cpp17.cc new file mode 100644 index 00000000000..1d5b0739007 --- /dev/null +++ b/libstdc++-v3/testsuite/24_iterators/range_access_cpp17.cc @@ -0,0 +1,57 @@ +// { dg-do compile { target c++1z } } +// { dg-options "-std=gnu++17" } + +// Copyright (C) 2017 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/>. + +// C++ 2017 27.7, range access [iterator.range] + +#include <iterator> + +void +test01() +{ + using std::reverse_iterator; + static int i[1]; + static_assert(std::cbegin(i) == i); + static_assert(std::cend(i) == i+1); + static_assert(std::rbegin(i) == reverse_iterator<int*>(i+1)); + static_assert(std::rend(i) == reverse_iterator<int*>(i)); + static_assert(std::crbegin(i) == reverse_iterator<int*>(i+1)); + static_assert(std::crend(i) == reverse_iterator<int*>(i)); +} + +void +test02() +{ + static int i[] = { 1, 2 }; + static_assert(std::distance(std::begin(i), std::end(i)) == 2); + static_assert(std::distance(std::cbegin(i), std::cend(i)) == 2); +} + +void +test03() +{ + using std::reverse_iterator; + static std::initializer_list<int> il{1}; + static_assert(std::cbegin(il) == il.begin()); + static_assert(std::cend(il) == il.end()); + static_assert(std::rbegin(il) == reverse_iterator<const int*>(il.end())); + static_assert(std::rend(il) == reverse_iterator<const int*>(il.begin())); + static_assert(std::crbegin(il) == reverse_iterator<const int*>(il.end())); + static_assert(std::crend(il) == reverse_iterator<const int*>(il.begin())); +} |