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e851aa1703
This macro should have been updated to 201811 when the last C++20 changes were implemented. However those changes are not enabled for C++17 mode, so the macro should only have the new value in C++20 mode. This change ensures that the macro is defined to 201603 for C++17 and 201811 for C++20. * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Define different values for C++17 and C++20, to indicate different feature sets. Update value for C++20 to indicate P1032R1 support. * include/std/version (__cpp_lib_array_constexpr): Likewise. * testsuite/23_containers/array/comparison_operators/constexpr.cc: Check feature test macro. * testsuite/23_containers/array/element_access/constexpr_c++17.cc: New test. * testsuite/23_containers/array/requirements/constexpr_fill.cc: Check feature test macro. * testsuite/23_containers/array/requirements/constexpr_iter.cc: Test in C++17 mode and check feature test macro. |
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