Re: [PATCH] PR fortran/104812: generate error for constuct-name clash with symbols

[Harald Anlauf via Gcc-patches]

Hi Mike,

for contributing, you'd need to have a GNU copyright assignment or
DCO certification, and I cannot find your name in the usual place.

See e.g. https://gcc.gnu.org/dco.html for details.

Thanks,
Harald

Am 05.04.22 um 19:33 schrieb Mike Kashkarov via Gcc-patches:

Greetings,

Propose patch for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104812 to
reject non-conforming code when construct-name clashes with already
defined symbol names, e.g:

      subroutine s1
        logical :: x
        x: if (x) then ! Currently gfortran accepts 'x' as constuct-name
        end if x
      end

Steve Kargl poited that (Fortran 2018, 19.4, p 498):

    Identifiers of entities, other than statement or construct entities (19.4),
    in the classes

      (1) named variables, ..., named constructs, ...,

   Within its scope, a local identifier of one class shall not be the
   same as another local identifier of the same class,

Regtested on x86_64-pc-linux-gnu, OK for mainline?

Thanks.