| commit | 7da0fc24aa6bb985ceafbfd8fab729ca00bf6703 | |
| author | redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Thu, 5 Dec 2019 00:42:06 +0000 (5 00:42 +0000) | ||
| committer | redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Thu, 5 Dec 2019 00:42:06 +0000 (5 00:42 +0000) | ||
| tree | 204b53d72bcd8d72a429ccc276d959002b69f048 | treesnapshot (tar.gz zip) |
| parent | 265750588266c6207ce08bab81d8f5c88c9f46c7 | commitdiff |
libstdc++: Implement spaceship for std::array (P1614R2)
As done for std::pair, this defines operator<=> as a non-member function
template and does not alter operator==, as expected to be proposed as
the resolution to an unpublished LWG issue.
Instead of calling std::lexicographical_compare_three_way the <=>
overload is implemented by hand to take advantage of the fact the
element types and array sizes are known to be the same.
* include/bits/cpp_type_traits.h (__is_byte<char8_t>): Add
specialization.
* include/std/array (operator<=>): Likewise.
* testsuite/23_containers/array/comparison_operators/constexpr.cc:
Test three-way comparisons and arrays of unsigned char.
* testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust
dg-error line numbers.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@278981 138bc75d-0d04-0410-961f-82ee72b054a4
As done for std::pair, this defines operator<=> as a non-member function
template and does not alter operator==, as expected to be proposed as
the resolution to an unpublished LWG issue.
Instead of calling std::lexicographical_compare_three_way the <=>
overload is implemented by hand to take advantage of the fact the
element types and array sizes are known to be the same.
* include/bits/cpp_type_traits.h (__is_byte<char8_t>): Add
specialization.
* include/std/array (operator<=>): Likewise.
* testsuite/23_containers/array/comparison_operators/constexpr.cc:
Test three-way comparisons and arrays of unsigned char.
* testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust
dg-error line numbers.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@278981 138bc75d-0d04-0410-961f-82ee72b054a4