Re: [Patch, Fortran] PR71068 - fix ICE on invalid with coindexed DATA

[Paul Richard Thomas <paul dot richard dot thomas at gmail dot com>]

Dear Tobias,

"Beauty is in the eye of the beholder!" It works, it's good :-)

OK for trunk

Thanks for the patch

Paul

PS Why, in principle, can data objects not have co-indices?

On 21 June 2016 at 16:15, Tobias Burnus
<tobias.burnus@physik.fu-berlin.de> wrote:
> Dear all,
>
> the problem comes up with:
>    data a(1)[1] /1/
> which is invalid. In resolve.c's check_data_variable(), one has:
>
>   if (!gfc_resolve_expr (var->expr))
>     return false;
> ...
>   e = var->expr;
>
>   if (e->expr_type != EXPR_VARIABLE)
>     gfc_internal_error ("check_data_variable(): Bad expression");
>
> which triggers as resolve_variable() has:
>
>   if (t && flag_coarray == GFC_FCOARRAY_LIB && gfc_is_coindexed (e))
>     add_caf_get_intrinsic (e);
>
>
> The solution is either not to decorate the DATA variable with
> caf_get() - or to strip it off for testing. The latter has been
> done in this patch. It's not really beautify, but works.
>
> Additionally, I had to add the argument-handling short cut
> as otherwise, more and more caf_get() could be added around the
> argument, which is both pointless and causes the strip off to
> fail.
>
>
> Build and regtested on x86-64-gnu-linux.
> OK for the trunk? Or do you see a more beautiful approach?
>
> Tobias



-- 
The difference between genius and stupidity is; genius has its limits.

Albert Einstein