c++: constexpr aggr init of empty class [PR101040]

This is basically the aggregate initializer version of PR97566; as in that
bug, we are trying to initialize empty field 'obj' in 'single' when there's
no CONSTRUCTOR entry for the 'single' base class subobject of 'derived'.  As
with that bug, the fix is to stop trying to add entries for empty fields,
this time in cxx_eval_bare_aggregate.

The change to the other function isn't necessary for this version of
the patch, but seems worthwhile for robustness anyway.

	PR c++/101040
	PR c++/97566

gcc/cp/ChangeLog:

	* class.c (is_empty_field): Handle null argument.
	* constexpr.c (cxx_eval_bare_aggregate): Discard initializer
	for empty field.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp2a/no_unique_address13.C: New test.

0 files changed, 0 insertions, 0 deletions