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help the ranges concepts recognize standard contiguous iterators in c++14/17 #3202

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merged 10 commits into from
Dec 21, 2024
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Merged

help the ranges concepts recognize standard contiguous iterators in c++14/17 #3202

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21907a4
help the ranges concepts recognize standard contiguous iterators in c…
ericniebler Dec 19, 2024
e16f081
`same_as` doesn't exist in C++11
ericniebler Dec 19, 2024
0bd73a2
review feedback, and no contiguous iterators in c++11
ericniebler Dec 19, 2024
1de5b54
avoid elaborated type specifier when looking for nested type aliases
ericniebler Dec 19, 2024
89e9891
Merge remote-tracking branch 'origin/main' into cpp17-contiguous-ranges
ericniebler Dec 20, 2024
ff13997
Merge remote-tracking branch 'origin/main' into cpp17-contiguous-ranges
ericniebler Dec 20, 2024
3d1d01b
review feedback
ericniebler Dec 20, 2024
2a36fb2
try to avoid spurious template instantiation during ADL
ericniebler Dec 20, 2024
67c075a
remove needless parens
ericniebler Dec 20, 2024
bde2fd4
revert to a formulation that made msvc happy
ericniebler Dec 20, 2024
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19 changes: 11 additions & 8 deletions libcudacxx/include/cuda/std/__iterator/iterator_traits.h
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Original file line number Diff line number Diff line change
Expand Up @@ -170,24 +170,23 @@ struct __iter_traits_cache
template <class _Iter>
using _ITER_TRAITS = typename __iter_traits_cache<_Iter>::type;

#if defined(_GLIBCXX_DEBUG)
#if _CCCL_STD_VER >= 2014
# if defined(_GLIBCXX_DEBUG)
_CCCL_TEMPLATE(class _Iter, class _Ty, class _Range)
_CCCL_REQUIRES(_IsSame<_Iter, ::__gnu_debug::_Safe_iterator<_Ty*, _Range>>::value)
_LIBCUDACXX_HIDE_FROM_ABI auto
__iter_concept_fn(::__gnu_debug::_Safe_iterator<_Ty*, _Range>, __priority_tag<3>) -> contiguous_iterator_tag;
#endif
#if defined(__GLIBCXX__)
# endif
# if defined(__GLIBCXX__)
_CCCL_TEMPLATE(class _Iter, class _Ty, class _Range)
_CCCL_REQUIRES(_IsSame<_Iter, ::__gnu_cxx::__normal_iterator<_Ty*, _Range>>::value)
_LIBCUDACXX_HIDE_FROM_ABI auto
__iter_concept_fn(::__gnu_cxx::__normal_iterator<_Ty*, _Range>, __priority_tag<3>) -> contiguous_iterator_tag;
#endif
#if defined(_LIBCPP_VERSION)
# elif defined(_LIBCPP_VERSION)
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_CCCL_TEMPLATE(class _Iter, class _Ty)
_CCCL_REQUIRES(_IsSame<_Iter, ::std::__wrap_iter<_Ty*>>::value)
_LIBCUDACXX_HIDE_FROM_ABI auto __iter_concept_fn(::std::__wrap_iter<_Ty*>, __priority_tag<3>) -> contiguous_iterator_tag;
#endif
#if defined(_MSVC_STL_VERSION) || defined(_IS_WRS)
# elif defined(_MSVC_STL_VERSION) || defined(_IS_WRS)
_CCCL_TEMPLATE(class _Iter)
_CCCL_REQUIRES(_IsSame<_Iter, class _Iter::_Array_iterator>::value)
_LIBCUDACXX_HIDE_FROM_ABI auto __iter_concept_fn(_Iter, __priority_tag<3>) -> contiguous_iterator_tag;
Expand All @@ -209,10 +208,14 @@ _LIBCUDACXX_HIDE_FROM_ABI auto __iter_concept_fn(_Iter, __priority_tag<3>) -> co
_CCCL_TEMPLATE(class _Iter)
_CCCL_REQUIRES(_IsSame<_Iter, class _Iter::_String_view_iterator>::value)
_LIBCUDACXX_HIDE_FROM_ABI auto __iter_concept_fn(_Iter, __priority_tag<3>) -> contiguous_iterator_tag;
#endif
_CCCL_TEMPLATE(class _Iter)
_CCCL_REQUIRES(_IsSame<_Iter, class _Iter::_Span_iterator>::value)
_LIBCUDACXX_HIDE_FROM_ABI auto __iter_concept_fn(_Iter, __priority_tag<3>) -> contiguous_iterator_tag;
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# endif
_CCCL_TEMPLATE(class _Iter, class _Ty)
_CCCL_REQUIRES(_IsSame<_Iter, _Ty*>::value)
_LIBCUDACXX_HIDE_FROM_ABI auto __iter_concept_fn(_Ty*, __priority_tag<3>) -> contiguous_iterator_tag;
#endif // _CCCL_STD_VER >= 2014
template <class _Iter>
_LIBCUDACXX_HIDE_FROM_ABI auto
__iter_concept_fn(_Iter, __priority_tag<2>) -> class _ITER_TRAITS<_Iter>::iterator_concept;
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