https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92272
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Wed Oct 30 15:48:11 2019 New Revision: 277629 URL: https://gcc.gnu.org/viewcvs?rev=277629&root=gcc&view=rev Log: Apply C++20 changes to various iterator types This ensures that __normal_iterator<T*, C> satisfies the contiguous_iterator concept, by defining the iterator_concept member type. Also update vector<bool>'s iterators, reverse_iterator, istreambuf_iterator and ostreambuf_iterator to meet the C++20 requirements. PR libstdc++/92272 * include/bits/stl_bvector.h (_Bit_iterator::pointer) (_Bit_const_iterator::pointer): Define as void for C++20. * include/bits/stl_iterator.h (reverse_iterator::operator->()): Add constraints for C++20. (__normal_iterator::iterator_concept): Define for C++20. * include/bits/streambuf_iterator.h (istreambuf_iterator::pointer): Define as void for C++20. (ostreambuf_iterator::difference_type): Define as ptrdiff_t for C++20. (ostreambuf_iterator::ostreambuf_iterator()): Add default constructor for C++20. * testsuite/23_containers/vector/bool/iterator_c++20.cc: New test. * testsuite/24_iterators/bidirectional/concept.cc: New test. * testsuite/24_iterators/bidirectional/tag.cc: New test. * testsuite/24_iterators/contiguous/concept.cc: New test. * testsuite/24_iterators/contiguous/tag.cc: New test. * testsuite/24_iterators/forward/concept.cc: New test. * testsuite/24_iterators/forward/tag.cc: New test. * testsuite/24_iterators/input/concept.cc: New test. * testsuite/24_iterators/input/tag.cc: New test. * testsuite/24_iterators/istreambuf_iterator/requirements/typedefs.cc: New test. * testsuite/24_iterators/ostreambuf_iterator/requirements/typedefs.cc: New test. * testsuite/24_iterators/output/concept.cc: New test. * testsuite/24_iterators/output/tag.cc: New test. * testsuite/24_iterators/random_access/concept.cc: New test. * testsuite/24_iterators/random_access/tag.cc: New test. * testsuite/24_iterators/range_operations/advance_debug_neg.cc: New test. * testsuite/24_iterators/random_access_iterator/26020.cc: Move to ... * testsuite/24_iterators/operations/26020.cc: ... here. * testsuite/24_iterators/random_access_iterator/ string_vector_iterators.cc: Move to ... * testsuite/24_iterators/random_access/string_vector_iterators.cc: ... here. Added: trunk/libstdc++-v3/testsuite/23_containers/vector/bool/iterator_c++20.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/contiguous/concept.cc trunk/libstdc++-v3/testsuite/24_iterators/bidirectional/ trunk/libstdc++-v3/testsuite/24_iterators/bidirectional/concept.cc trunk/libstdc++-v3/testsuite/24_iterators/bidirectional/tag.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/random_access_iterator/26020.cc trunk/libstdc++-v3/testsuite/24_iterators/forward/ trunk/libstdc++-v3/testsuite/24_iterators/forward/concept.cc trunk/libstdc++-v3/testsuite/24_iterators/forward/tag.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/random_access_iterator/26020.cc trunk/libstdc++-v3/testsuite/24_iterators/input/ trunk/libstdc++-v3/testsuite/24_iterators/input/concept.cc trunk/libstdc++-v3/testsuite/24_iterators/input/tag.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/random_access_iterator/26020.cc trunk/libstdc++-v3/testsuite/24_iterators/operations/26020.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/random_access_iterator/26020.cc trunk/libstdc++-v3/testsuite/24_iterators/output/ trunk/libstdc++-v3/testsuite/24_iterators/output/concept.cc trunk/libstdc++-v3/testsuite/24_iterators/output/tag.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/random_access_iterator/26020.cc trunk/libstdc++-v3/testsuite/24_iterators/random_access/ trunk/libstdc++-v3/testsuite/24_iterators/random_access/concept.cc trunk/libstdc++-v3/testsuite/24_iterators/random_access/string_vector_iterators.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/random_access_iterator/string_vector_iterators.cc trunk/libstdc++-v3/testsuite/24_iterators/random_access/tag.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/contiguous/concept.cc trunk/libstdc++-v3/testsuite/24_iterators/range_operations/advance_debug_neg.cc - copied, changed from r277628, trunk/libstdc++-v3/testsuite/24_iterators/random_access_iterator/26020.cc Removed: trunk/libstdc++-v3/testsuite/24_iterators/random_access_iterator/ Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/stl_bvector.h trunk/libstdc++-v3/include/bits/stl_iterator.h trunk/libstdc++-v3/include/bits/streambuf_iterator.h trunk/libstdc++-v3/testsuite/24_iterators/contiguous/concept.cc trunk/libstdc++-v3/testsuite/24_iterators/contiguous/tag.cc trunk/libstdc++-v3/testsuite/24_iterators/istreambuf_iterator/requirements/typedefs.cc trunk/libstdc++-v3/testsuite/24_iterators/ostreambuf_iterator/requirements/typedefs.cc
