[Bug libstdc++/117858] [15 regression] openrct2-0.4.16 fails to build (optional:823:52: error: incomplete type ‘std::__converts_from_optional’ used in nested name specifier)

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117858

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
Created attachment 59752
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59752&action=edit
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