[Bug fortran/33363] New: gfortran is missing -fcase-preserve option

["burnus at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Split-off from PR31310.

g77 has a huge number (~20) of case options, cf.
http://gcc.gnu.org/onlinedocs/gcc-3.4.6/g77/Fortran-Dialect-Options.html#index-g_t_002dfintrin_002dcase_002dinitcap-option-237

-fcase-preserve would probably be the most useful option; I don't know how much
needed this option is for old code (cf. PR31310).

Mentioning -fcase-lower in the gfortran manual is a bit odd if this options
does not actually exist.

In gfortran's invoke.texi:
"For example, with @option{-funderscoring}, and assuming other defaults like
 @option{-fcase-lower} and that @code{j()} and @code{max_count()} are
 external functions while @code{my_var} and @code{lvar} are local variables,
 a statement like"


-- 
           Summary: gfortran is missing -fcase-preserve option
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33363