c++/reflection: check TYPE_BEING_DEFINED in define_aggregateHEADtrunkmaster

As discussed in
<https://gcc.gnu.org/pipermail/gcc-patches/2026-January/705756.html>,
we should check TYPE_BEING_DEFINED along with COMPLETE_TYPE_P in
eval_define_aggregate.  It seems that with this check added, we don't
need this code anymore:

      if (c == type)
        {
          auto_diagnostic_group d;
          error_at (loc, "%<define_aggregate%> evaluated from "
                         "%<consteval%> block enclosed by %qT being "
                         "defined", type);
	  //...
	}

so I'm removing that in this patch.

gcc/cp/ChangeLog:

	* reflect.cc (eval_define_aggregate): Also give an error when
	TYPE_BEING_DEFINED is true for the first argument.  Remove code
	that did the same.

gcc/testsuite/ChangeLog:

	* g++.dg/reflect/define_aggregate3.C: Adjust expected diagnostic.
	* g++.dg/reflect/p2996-21.C: Likewise.

Reviewed-by: Jakub Jelinek <jakub@redhat.com>
Reviewed-by: Jason Merrill <jason@redhat.com>

0 files changed, 0 insertions, 0 deletions