[Bug fortran/64066] New: [F2008] Wrongly accepts ; (semicolon) at ending a null token

[Bug fortran/64066] New: [F2008] Wrongly accepts ; (semicolon) at ending a null token

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64066

            Bug ID: 64066
           Summary: [F2008] Wrongly accepts ; (semicolon) at ending a null
                    token
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org

Fortran 2008 permits:
  I=1&
  ;END

i.e. a continued line which starts with a ";".

gfortran wrongly also accepts a null statement terminated with a ';':

  ;END

That's a "regression" in gfortran 4.6, which adds this feature.

See also thread at
https://groups.google.com/forum/#!topic/comp.lang.fortran/hCuhaQv6JGc ("Short
F2008 program") around 24 November; I believe it was also recently discussed at
the J3 mailing list, but their archive is currently down.

[Bug fortran/64066] [F2008] Wrongly accepts ; (semicolon) at ending a null token

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64066

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-04-03
     Ever confirmed|0                           |1

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the second test with revision r158253 (2010-04-13) gives the error

  ;END
  1
Error: Semicolon at (1) needs to be preceded by statement

The error has disappeared with r162456 (2010-07-23).

Note that there is no error on trunk (5.0) with -std=f95 or f2003).