re PR c++/48370 (G++ fails to extend reference temporary lifetime in some situations)

re PR c++/48370 (G++ fails to extend reference temporary lifetime in some situations)

	PR c++/48370
	* call.c (extend_ref_init_temps, extend_ref_init_temps_1): New.
	(set_up_extended_ref_temp): Use it.  Change cleanup parm to VEC.
	(initialize_reference): Just call convert_like.
	* decl.c (grok_reference_init): Just call initialize_reference.
	(build_init_list_var_init): Remove.
	(check_initializer): Change cleanup parm to VEC.  Handle references
	like other types.  Call perform_implicit_conversion instead
	of build_init_list_var_init.  Don't use build_aggr_init for
	aggregate initialization of arrays.
	(cp_finish_decl): Change cleanup to VEC.
	* typeck2.c (store_init_value): Call extend_ref_init_temps.
	Use build_vec_init for non-constant arrays.
	* init.c (expand_aggr_init_1): Adjust.
	(build_vec_init): Avoid re-converting an initializer
	that's already digested.
	* mangle.c (mangle_ref_init_variable): Add a discriminator.
	* cp-tree.h: Adjust.
	* typeck.c (convert_for_initialization): Adjust.
	* decl2.c (maybe_emit_vtables): Adjust.

From-SVN: r180944