[Patch, Fortran-5, 66035, v2] [5/6 Regression] gfortran ICE segfault

Andre Vehreschild vehre@gmx.de
Tue Jul 21 08:05:00 GMT 2015


Hi all,

as this is a 5/6 regression and the patch now lived for some time in the 6
branch without any complaints, I like to propose the same patch for the
5-branch. 

Bootstraps and regtests fine on x86_64-linux-gnu/f21.

Ok for trunk-5 (aka gcc-5-branch)?

Regards,
	Andre

On Fri, 17 Jul 2015 12:17:07 +0200
Andre Vehreschild <vehre@gmx.de> wrote:

> Hi Paul, 
> 
> thanks for the review, commited as r225928.
> 
> Regards,
> 	Andre
> 
> On Wed, 15 Jul 2015 13:40:29 +0200
> Paul Richard Thomas <paul.richard.thomas@gmail.com> wrote:
> 
> > Dear Andre,
> > 
> > I am still in the bizarre situation that the testcase compiles and
> > runs correctly on a clean trunk!
> > 
> > That said, the patch applies cleanly and, at very least from my point
> > of view, does not do any harm :-)
> > 
> > OK for trunk
> > 
> > Thanks for the patch
> > 
> > Paul
> > 
> > On 11 July 2015 at 14:08, Andre Vehreschild <vehre@gmx.de> wrote:
> > > Hi Mikael,
> > >
> > >> > @@ -7030,7 +7053,8 @@ gfc_trans_subcomponent_assign (tree dest,
> > >> > gfc_component * cm, gfc_expr * expr, gfc_add_expr_to_block (&block,
> > >> > tmp); }
> > >> >    else if (init && (cm->attr.allocatable
> > >> > -      || (cm->ts.type == BT_CLASS && CLASS_DATA
> > >> > (cm)->attr.allocatable)))
> > >> > +      || (cm->ts.type == BT_CLASS && CLASS_DATA (cm)->attr.allocatable
> > >> > +          && expr->ts.type != BT_CLASS)))
> > >> >      {
> > >> >        /* Take care about non-array allocatable components here.  The
> > >> > alloc_* routine below is motivated by the alloc_scalar_allocatable_for_
> > >> > @@ -7074,6 +7098,14 @@ gfc_trans_subcomponent_assign (tree dest,
> > >> > gfc_component * cm, gfc_expr * expr, tmp = gfc_build_memcpy_call (tmp,
> > >> > se.expr, size); gfc_add_expr_to_block (&block, tmp);
> > >> >     }
> > >> > +      else if (cm->ts.type == BT_CLASS && expr->ts.type == BT_CLASS)
> > >> > +   {
> > >> > +     tmp = gfc_copy_class_to_class (se.expr, dest, integer_one_node,
> > >> > +                              CLASS_DATA
> > >> > (cm)->attr.unlimited_polymorphic);
> > >> > +     gfc_add_expr_to_block (&block, tmp);
> > >> > +     gfc_add_modify (&block, gfc_class_vptr_get (dest),
> > >> > +                     gfc_class_vptr_get (se.expr));
> > >> > +   }
> > >> >        else
> > >> >     gfc_add_modify (&block, tmp,
> > >> >                     fold_convert (TREE_TYPE (tmp), se.expr));
> > >> But this hunk is canceled by the one before, isn't it?
> > >> I mean, If the condition here is true, the condition before was false?
> > >
> > > You are absolutely right. The second hunk is dead code and removed in the
> > > attached patch. That must have been the first attempt to address the issue
> > > and later on I did not perceive that it was useless. Sorry for that.
> > >
> > > Regards,
> > >         Andre
> > > --
> > > Andre Vehreschild * Email: vehre ad gmx dot de
> > 
> > 
> > 
> 
> 


-- 
Andre Vehreschild * Email: vehre ad gmx dot de 
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