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[libc++] Fix rejects-valid in std::span copy construction (#104500 )

Trying to copy-construct a std::span from another std::span holding an
incomplete type would fail as we evaluate the SFINAE for the range-based
constructor. The problem was that we checked for __is_std_span after
checking for the range being a contiguous_range, which hard-errored
because of arithmetic on a pointer to incomplete type.

As a drive-by, refactor the whole test and format it.

Fixes #104496

2024-08-16 11:08:34 -04:00

span.cons

[libc++] Fix rejects-valid in std::span copy construction (#104500 )

2024-08-16 11:08:34 -04:00

span.elem

[libc++][span] P2821R5: span.at() (#74994 )

2024-01-05 11:41:22 +02:00

span.iterators

[libc++][spaceship] Implements X::iterator container requirements. (#99343 )

2024-07-24 19:42:48 +02:00

span.objectrep

[libc++] Qualifies size_t.