[Bug fortran/96839] New: gfortran thinks common_bits starts a common block

[Bug fortran/96839] New: gfortran thinks common_bits starts a common block

[w.clodius at icloud dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96839

            Bug ID: 96839
           Summary: gfortran thinks common_bits starts a common block
           Product: gcc
           Version: 8.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: w.clodius at icloud dot com
  Target Milestone: ---

Created attachment 49151
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49151&action=edit
A reduced code illustrating the problem.

If I have both a member function named bits and an attribute named bits, a
combination that is illegal, gfortran 8.1 gets confused and thinks common_bits
starts a common block. It took me a while to understand the cause of the error
message.

[Bug fortran/96839] gfortran thinks common_bits starts a common block

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96839

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
           Priority|P3                          |P4
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2020-08-29

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
With GCC10 and 11 the errors are

pr96839.f90:47:38:

   47 |         common_bits = min(self % bits, set2 % bits)
      |                                      1
Error: Expected argument list at (1)
pr96839.f90:57:25:

   57 |        bits = self % bits
      |                         1
Error: Expected argument list at (1)
pr96839.f90:25:17:

   25 |         procedure, pass(self) :: bits
      |                 1
Error: Procedure 'bits' at (1) has the same name as a component of 'bitset_t'

With GCC7 to GCC9 the first error is replaced with

pr96839.f90:47:14:

   47 |         common_bits = min(self % bits, set2 % bits)
      |              1
Error: Syntax error in COMMON statement at (1)

Could this PR be considered as FIXED?

[Bug fortran/96839] gfortran thinks common_bits starts a common block

[w.clodius at icloud dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96839

--- Comment #2 from William Clodius <w.clodius at icloud dot com> ---
I think so.

> On Aug 29, 2020, at 8:17 AM, dominiq at lps dot ens.fr <gcc-bugzilla@gcc.gnu.org> wrote:
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96839
> 
> Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
> 
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>             Status|UNCONFIRMED                 |WAITING
>           Priority|P3                          |P4
>     Ever confirmed|0                           |1
>   Last reconfirmed|                            |2020-08-29
> 
> --- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> With GCC10 and 11 the errors are
> 
> pr96839.f90:47:38:
> 
>   47 |         common_bits = min(self % bits, set2 % bits)
>      |                                      1
> Error: Expected argument list at (1)
> pr96839.f90:57:25:
> 
>   57 |        bits = self % bits
>      |                         1
> Error: Expected argument list at (1)
> pr96839.f90:25:17:
> 
>   25 |         procedure, pass(self) :: bits
>      |                 1
> Error: Procedure 'bits' at (1) has the same name as a component of 'bitset_t'
> 
> With GCC7 to GCC9 the first error is replaced with
> 
> pr96839.f90:47:14:
> 
>   47 |         common_bits = min(self % bits, set2 % bits)
>      |              1
> Error: Syntax error in COMMON statement at (1)
> 
> Could this PR be considered as FIXED?
> 
> -- 
> You are receiving this mail because:
> You reported the bug.

[Bug fortran/96839] gfortran thinks common_bits starts a common block

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96839

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > Could this PR be considered as FIXED?
>
> I think so.

No objection since three months, closing.