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These macros all correspond to features that are already supported, but the macro was not defined when the feature was implemented. * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define to indicate P1006R1 support. (__cpp_lib_to_address): Define to indicate P0653R2 support. * include/bits/range_access.h (__cpp_lib_ssize): Define to indicate P1227R2 support. * include/bits/ranges_algo.h (__cpp_lib_shift): Define to indicate P0769R2 support. * include/std/atomic (__cpp_lib_atomic_float): Define to indicate P0020R6 support. * include/std/memory (__cpp_lib_assume_aligned): Define to indicate P1007R3 support. * include/std/memory_resource (__cpp_lib_polymorphic_allocator): Define to indicate P0339R6 support. * include/std/string_view (__cpp_lib_starts_ends_with): Define to indicate P0457R2 support. * include/std/type_traits (__cpp_lib_is_nothrow_convertible): Define to indicate P0758R1 support. (__cpp_lib_remove_cvref): Define to indicate P0550R2 support. (__cpp_lib_type_identity): Define to indicate P0887R1 support. * include/std/version (__cpp_lib_atomic_float) (__cpp_lib_is_nothrow_convertible, __cpp_lib_remove_cvref) (__cpp_lib_type_identity, __cpp_lib_assume_aligned) (__cpp_lib_constexpr_memory, __cpp_lib_polymorphic_allocator) (__cpp_lib_shift, __cpp_lib_ssize, __cpp_lib_starts_ends_with) (__cpp_lib_to_address): Define. * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
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