Exception on multibyte character in filename

[B7rian]

C++ doesn't like 1223-全家照.rar and throws an uncaught exception when this filename is encountered in a checksum file.

[B7rian]

terminate called after throwing an instance of 'std::filesystem::__cxx11::filesystem_error'
what(): filesystem error: Cannot convert character sequence: Invalid or incomplete multibyte or wide character
Aborted

[B7rian]

Note: It can find this file ok and generate a checksum for it, but can't check it

[B7rian]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90281
https://stackoverflow.com/questions/58521857/cross-platform-way-to-handle-stdstring-stdwstring-with-stdfilesystempath