[Bug fortran/25693] New: Missleading line number for 'unused variable' warnings

[eedelman at gcc dot gnu dot org]

The line number given in warning messages for unused variables in a procedure
with an internal procedure, is that of the first line of the internal
procedure, instead of the host procedure.  I find this a bit confusing:

erik:~$ cat -n swap.f90 
     1  subroutine sort()
     2      real :: a
     3
     4  contains
     5
     6      subroutine swap()
     7      end subroutine swap
     8
     9  end subroutine sort
erik:~$ gfortran -Wall -c swap.f90 
swap.f90: In function 'sort':
swap.f90:6: warning: unused variable 'a'

(The optimal thing would of course be to give the line where the variable was
declared, but since a variable can have several declarations (e.g. one for type
and a separate one for dimension), this is not allways possible.)


-- 
           Summary: Missleading line number for  'unused variable' warnings
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: minor
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: eedelman at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25693