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Re: [Patch, fortran] PR68534 - No error on mismatch in number of arguments between submodule and module interface
- From: Steve Kargl <sgk at troutmask dot apl dot washington dot edu>
- To: Paul Richard Thomas <paul dot richard dot thomas at gmail dot com>
- Cc: "fortran at gcc dot gnu dot org" <fortran at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 2 Dec 2015 22:43:41 -0800
- Subject: Re: [Patch, fortran] PR68534 - No error on mismatch in number of arguments between submodule and module interface
- Authentication-results: sourceware.org; auth=none
- References: <CAGkQGiJOT-0-PuPJa+Sk_Wm61MT1hrjNpP=tBztpy1KBV2yO=g at mail dot gmail dot com> <20151128161940 dot GA97246 at troutmask dot apl dot washington dot edu> <CAGkQGi+H+Mn-uP-QViL8=eXwWEK-i9Bz6xPhdN6ipKnL=G5yYg at mail dot gmail dot com> <20151203060233 dot GA62024 at troutmask dot apl dot washington dot edu> <20151203062630 dot GA62157 at troutmask dot apl dot washington dot edu>
On Wed, Dec 02, 2015 at 10:26:30PM -0800, Steve Kargl wrote:
> On Wed, Dec 02, 2015 at 10:02:33PM -0800, Steve Kargl wrote:
> > Paul,
> >
> > I'm stumped. Something is broken on i386-*-freebsd. :-(
> >
> > Running /mnt/kargl/gcc/gcc/testsuite/gfortran.dg/dg.exp ...
> > FAIL: gfortran.dg/submodule_10.f08 -O (internal compiler error)
> > FAIL: gfortran.dg/submodule_10.f08 -O (test for excess errors)
> > FAIL: gfortran.dg/submodule_11.f08 -O0 (internal compiler error)
> > FAIL: gfortran.dg/submodule_11.f08 -O0 (test for excess errors)
> > FAIL: gfortran.dg/submodule_11.f08 -O1 (internal compiler error)
> > FAIL: gfortran.dg/submodule_11.f08 -O1 (test for excess errors)
> > FAIL: gfortran.dg/submodule_11.f08 -O2 (internal compiler error)
> > FAIL: gfortran.dg/submodule_11.f08 -O2 (test for excess errors)
> > FAIL: gfortran.dg/submodule_11.f08 -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions (internal compiler error)
> > FAIL: gfortran.dg/submodule_11.f08 -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions (test for excess errors)
> > FAIL: gfortran.dg/submodule_11.f08 -O3 -g (internal compiler error)
> > FAIL: gfortran.dg/submodule_11.f08 -O3 -g (test for excess errors)
> > FAIL: gfortran.dg/submodule_11.f08 -Os (internal compiler error)
> > FAIL: gfortran.dg/submodule_11.f08 -Os (test for excess errors)
>
> Well, if I change the order of the conditionals decl.c:4831, I
> can get rid of the above FAILs.
>
> Index: decl.c
> ===================================================================
> --- decl.c (revision 231219)
> +++ decl.c (working copy)
> @@ -4826,7 +4826,7 @@ ok:
>
> /* Abbreviated module procedure declaration is not meant to have any
> formal arguments! */
> - if (!sym->abr_modproc_decl && formal && !head)
> + if (formal && !head && sym && !sym->abr_modproc_decl)
> arg_count_mismatch = true;
>
> for (p = formal, q = head; p && q; p = p->next, q = q->next)
>
> --
> steve
>
> > FAIL: gfortran.dg/submodule_13.f08 -O (internal compiler error)
> > FAIL: gfortran.dg/submodule_13.f08 -O (test for errors, line 29)
> > FAIL: gfortran.dg/submodule_13.f08 -O (test for excess errors)
These ICEs persist at line 4831. In looking at the code, I'm
now somewhat unsure what it should be doing. In particular,
there are 2 gfc_error_now() calls in the below:
for (p = formal, q = head; p && q; p = p->next, q = q->next)
{
if ((p->next != NULL && q->next == NULL)
|| (p->next == NULL && q->next != NULL))
arg_count_mismatch = true;
else if ((p->sym == NULL && q->sym == NULL)
|| strcmp (p->sym->name, q->sym->name) == 0)
continue;
else
gfc_error_now ("Mismatch in MODULE PROCEDURE formal "
"argument names (%s/%s) at %C",
p->sym->name, q->sym->name);
}
if (arg_count_mismatch)
gfc_error_now ("Mismatch in number of MODULE PROCEDURE "
"formal arguments at %C");
}
return MATCH_YES;
cleanup:
gfc_free_formal_arglist (head);
return m;
But, we return MATCH_YES? I would expect setting m = MATCH_ERROR
and jumping to cleanup. That's ugly.
--
Steve