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libstdc++: Add _GLIBCXX_DEBUG safe iterator C++20 iterator concept

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* include/debug/safe_iterator.h
	[__cpp_lib_concepts](_Safe_iterator<>::iterator_concept): Define for
	C++20.

From-SVN: r278717
This commit is contained in:
François Dumont 2019-11-26 06:07:23 +00:00
parent 616f21732e
commit db58c8e919
2 changed files with 10 additions and 0 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2019-11-26 François Dumont <fdumont@gcc.gnu.org>
* include/debug/safe_iterator.h
[__cpp_lib_concepts](_Safe_iterator<>::iterator_concept): Define for
C++20.
2019-11-25 Jonathan Wakely <jwakely@redhat.com>
* include/bits/iterator_concepts.h (ranges::iter_swap): Fix parameter

4
libstdc++-v3/include/debug/safe_iterator.h
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@ -140,6 +140,10 @@ namespace __gnu_debug
typedef typename _Traits::reference reference;
typedef typename _Traits::pointer pointer;
#if __cplusplus > 201703L && __cpp_lib_concepts
using iterator_concept = std::__detail::__iter_concept<_Iterator>;
#endif
/// @post the iterator is singular and unattached
_Safe_iterator() _GLIBCXX_NOEXCEPT : _Iter_base() { }