[Bug fortran/56850] New: Diagnostic of REAL*8 is odd: Accepted with -std=f95, -pedantic prints warning only with -std=gnu

[Bug fortran/56850] New: Diagnostic of REAL*8 is odd: Accepted with -std=f95, -pedantic prints warning only with -std=gnu

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56850

             Bug #: 56850
           Summary: Diagnostic of REAL*8 is odd: Accepted with -std=f95,
                    -pedantic prints warning only with -std=gnu
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid, diagnostic
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: burnus@gcc.gnu.org


Test case:
  real*8 r
  r  = 1
  end

Using GCC 4.1 with -std=f95 (but not GCC >=4.3) shows:
  real*8
       1
  Error: Nonstandard type declaration REAL*8 at (1)


Using GCC 4.1 to GCC 4.9, "-pedantic" shows:
  real*8 r
        1
  Warning: GNU Extension: Nonstandard type declaration REAL*8 at (1)


However, with GCC 4.3 to 4.9, -std=f95 -pedantic shows nothing.


I had expected that -std=f95 prints some warning/error diagnostic but it does
not. And, in particular, if "-pedantic -std=gnu" prints a warning, "-pedantic
-std=f95" should do so even more!


Another oddness: "-pedantic" prints a warning, if one uses "-pedantic -Werror"
- what does it print? Answer an error - but not the same but a simple
"Unclassifiable statement".

[Bug fortran/56850] Diagnostic of REAL*8 is odd: Accepted with -std=f95, -pedantic prints warning only with -std=gnu

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56850

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2013-04-05 20:30:13 UTC ---
On a related note: As
http://www.open-mpi.org/community/lists/users/2013/04/21684.php shows, the
following error is misleading:

> real*16, intent(in) :: x
> 1
> Error: Old-style type declaration  REAL*16 not supported at (1)

The problem is not the old-style type declaration but that kind=16 is not
supported. We should improve the error message.

[Bug fortran/56850] Diagnostic of REAL*8 is odd: Accepted with -std=f95, -pedantic prints warning only with -std=gnu

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56850

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-04-05
     Ever Confirmed|0                           |1

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2013-04-05 20:31:56 UTC ---
Confirmed.