[Bug preprocessor/106426] UTF-8 character literals do not have unsigned type in the preprocessor in -fchar8_t mode

[tom at honermann dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106426

--- Comment #3 from Tom Honermann <tom at honermann dot net> ---
I believe this issue can be resolved as fixed via commit
053876cdbe8057210e6f4da4eec2df58f92ccd4c for the gcc 13 release.