[Bug fortran/68815] Error/warning diagnostic: '%s' should be converted to %qs-like or %<%s%>-like string strings

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68815

--- Comment #4 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Simple bits committed, still to do:

(In reply to Tobias Burnus from comment #1)
> For expr.c's gfc_check_conformance - used by intrinsic.c and check.c, it
> enters as
>    "%s", buffer
> And the same seems to be true for all '%s' in interface.c.
> 
> Except of those files, scanner.c also should be handled at some point;
> however, it currently uses fprintf directly instead using the common
> diagnostics machinery.