I do not think that there will be a PR for the ICE. This is a
regression introduced by my patch for PR70149 (September 30th). A
patch is attached. I will commit it as 'obvious' as soon as it has
finished regtesting. I will also commit the patch for PR58618 shortly
afterwards. Thanks for the review.
Paul
On Wed, 17 Oct 2018 at 22:17, Tobias Burnus <[email protected]> wrote:
>
> Hi Paul,
>
> Paul Richard Thomas wrote:
> > This problem concerned associate targets being substrings. It turns
> > out that they are returned as pointer types (with a different cast for
> > unity based substrings ***sigh***) and so can be assigned directly to
> > the associate name. The patch quite simply removed the condition that
> > such targets be allocatable, pointer or dummy.
> > I noticed in the course of working up the testcase that
> > character (:), pointer :: ptr => NULL()
> > character (6), target :: tgt = 'lmnopq'
> > ptr => tgt
> > print *, len (ptr), ptr
> > end
> > ICEs on the NULL initialization of the pointer but works fine if this
> > is removed. Has this already been posted as a PR?
>
>
> I leave it to Dominique to search for a PR; otherwise, I believe the
> attach patch fixes the issue. – It just needs someone to package it with
> a test case, regtest and commit it.
>
>
> > Bootstrapped and regtested on FC28/x86_64 - OK for trunk?
>
> OK – thanks for the fix.
>
> Tobias
>
> > 2018-10-17 Paul Thomas <[email protected]>
> >
> > PR fortran/58618
> > * trans-stmt.c (trans_associate_var): All strings that return
> > as pointer types can be assigned directly to the associate
> > name so remove 'attr' and the condition that uses it.
> >
> > 2018-10-17 Paul Thomas <[email protected]>
> >
> > PR fortran/58618
> > * gfortran.dg/associate_45.f90 : New test.
--
"If you can't explain it simply, you don't understand it well enough"
- Albert Einstein
Index: gcc/fortran/trans-decl.c
===================================================================
*** gcc/fortran/trans-decl.c (revision 265231)
--- gcc/fortran/trans-decl.c (working copy)
*************** gfc_get_symbol_decl (gfc_symbol * sym)
*** 1762,1768 ****
gfc_finish_var_decl (length, sym);
if (!sym->attr.associate_var
&& TREE_CODE (length) == VAR_DECL
! && sym->value && sym->value->ts.u.cl->length)
{
gfc_expr *len = sym->value->ts.u.cl->length;
DECL_INITIAL (length) = gfc_conv_initializer (len, &len->ts,
--- 1762,1769 ----
gfc_finish_var_decl (length, sym);
if (!sym->attr.associate_var
&& TREE_CODE (length) == VAR_DECL
! && sym->value && sym->value->expr_type != EXPR_NULL
! && sym->value->ts.u.cl->length)
{
gfc_expr *len = sym->value->ts.u.cl->length;
DECL_INITIAL (length) = gfc_conv_initializer (len, &len->ts,
*************** gfc_get_symbol_decl (gfc_symbol * sym)
*** 1772,1778 ****
DECL_INITIAL (length));
}
else
! gcc_assert (!sym->value);
}
gfc_finish_var_decl (decl, sym);
--- 1773,1779 ----
DECL_INITIAL (length));
}
else
! gcc_assert (!sym->value || sym->value->expr_type == EXPR_NULL);
}
gfc_finish_var_decl (decl, sym);
Index: gcc/testsuite/gfortran.dg/deferred_character_30.f90
===================================================================
*** gcc/testsuite/gfortran.dg/deferred_character_30.f90 (nonexistent)
--- gcc/testsuite/gfortran.dg/deferred_character_30.f90 (working copy)
***************
*** 0 ****
--- 1,9 ----
+ ! { dg-do compile }
+ !
+ ! Fix a regression introduced by the patch for PR70149.
+ !
+ character (:), pointer :: ptr => NULL() ! The NULL () caused an ICE.
+ character (6), target :: tgt = 'lmnopq'
+ ptr => tgt
+ print *, len (ptr), ptr
+ end
