re PR c++/80095 (ICE with this pointer in NSDMI)

re PR c++/80095 (ICE with this pointer in NSDMI)

	PR c++/80095
	* call.c (build_over_call): Don't check cxx_dialect.
	* cp-gimplify.c (cp_gimplify_init_expr): Don't check cxx_dialect nor
	whether SUB is a CONSTRUCTOR.
	* init.c (build_new_1): Don't check cxx_dialect.
	* tree.c (replace_placeholders): Add a function comment.  Return if
	not in C++14, or if the object isn't a (member of a) class.
	* typeck2.c (store_init_value): Don't check cxx_dialect nor whether
	TYPE is CLASS_TYPE_P.

	* g++.dg/cpp1y/nsdmi-aggr8.C: New test.

From-SVN: r246772