[Bug fortran/31600] New: Better error message for redeclation of USEd symbols

[burnus at gcc dot gnu dot org]

The following program is invalid:
------------------
module a
implicit none
contains
  integer function bar()
    bar = 42
  end function
end module a

use a
implicit none
integer :: bar
end
------------------

gfortran -pedantic or gfortran -std=f95 gives the error:

Error: Symbol 'bar' at (1) already has basic type of INTEGER

which is correct but may not be that obvious. NAG f95 writes:

Error: x.f90, line 11: Redeclaration of symbol BAR from USEd module

and ifort:

fortcom: Error: x.f90, line 11: The attributes of this name conflict with those
made accessible by a USE statement.   [BAR]
integer :: bar
-----------^


-- 
           Summary: Better error message for redeclation of USEd symbols
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          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=31600