[Bug fortran/50252] New: Error message on "call x%y" (x not declared) can be more informative

["arjen.markus895 at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50252

             Bug #: 50252
           Summary: Error message on "call x%y" (x not declared) can be
                    more informative
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: arjen.markus895@gmail.com


If you forget to declare a variable with type-bound procedures, say x,
and call one of the intended procedures anyway, the message is simply
that there was a syntax error.

The program:


program test123

    call bb%print

end program test123


results in the following error message:


xx.f90:3.11:

    call x%print
           1
Error: Syntax error in CALL statement at (1)

This message could be made clearer by pointing out that a variable
may not be declared - if the statement contains a %:

Error: Syntax error in CALL statement at (1). Possibly a variable has not been
declared.