[Bug fortran/78822] [cleanup] replace static char buffers by build_message_string

[janus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78822

janus at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[cleanup] replace static    |[cleanup] replace static
                   |char buffers by std:string  |char buffers by
                   |                            |build_message_string

--- Comment #21 from janus at gcc dot gnu.org ---
Given the amount of discussion about std::string (and resistance against it), I
will for now go with using build_message_string (thus changing PR title) ...