[Bug libstdc++/88607] forward_list.h contains utf-8 charactor

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88607

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45297
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45297&action=edit
gcc9-pr88607.patch

Untested patch.  Another option is do these changes (transliterations or
removals) during make install, so that the UTF-8 characters are still used e.g.
in the doxygen generated documentation.
echo 'fi—éö§’' | iconv -f UTF-8// -t ASCII//TRANSLIT
fi--eo?'
so unlike my patch — is replaced by -- rather than just - and § is not removed,
but ? used instead, though for the latter case I think removing of the section
symbol is better.  And we can't use iconv in make install, because not all
hosts will have it.