Jonathan Wakely 4dfdda108f PR72792 detect allocator pointer types without invalid rebinding ... PR libstdc++/72792 * include/bits/alloc_traits.h (__allocator_traits_base::__diff_type) (__allocator_traits_base::__size_type): Remove. (allocator_traits::_Ptr): New class template to detect const and void pointer types without instantiating pointer_traits::rebind unnecessarily. (allocator_traits::_Diff): Likewise for detecting difference_type. (allocator_traits::_Size): New class template to detect size_type without instantiating make_unsigned unnecessarily. * include/bits/ptr_traits.h (pointer_traits::element_type): Use __detected_or_t instead of __detected_or_t_. * include/std/type_traits (__detected_or_t_): Remove. * testsuite/20_util/allocator_traits/members/pointers.cc: New test. From-SVN: r244706		2017-01-20 12:03:36 +00:00
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members	PR72792 detect allocator pointer types without invalid rebinding	2017-01-20 12:03:36 +00:00
requirements	Update copyright years.	2017-01-01 13:07:43 +01:00