[libcxx-commits] [libcxx] [libc++][filesystem] Report an error for canonical("") (PR #215031)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 commented:

Can we add a test for `weakly_canonical` to ensure that an empty string is accepted?

https://github.com/llvm/llvm-project/pull/215031