William Tran-Viet 389a23c538

[libc++] Implement P2988R12: std::optional<T&> (#155202) ...

Resolves #148131

- Unlock `std::optional<T&>` implementation
- Allow instantiations of `optional<T(&)(...)>` and `optional<T(&)[]>`
but disables `value_or()` and `optional::iterator` + all `iterator`
related functions
- Update documentation
- Update tests

2025-11-12 11:00:08 +08:00

..

dtor.pass.cpp

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