* exp_ch2.adb (Expand_Current_Value): Make an appropriate character

	literal if the entity is of a character type.
	* gcc-interface/lang.opt (fsigned-char): New option.
	* gcc-interface/misc.c (gnat_handle_option): Accept it.
	(gnat_init): Adjust comment.
	* gcc-interface/gigi.h (finish_character_type): New prototype.
	(maybe_character_type): New inline function.
	(maybe_character_value): Likewise.
	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Enumeration_Type>: For
	a character of CHAR_TYPE_SIZE, make a signed type if flag_signed_char.
	Set TYPE_ARTIFICIAL early and call finish_character_type on the type.
	<E_Enumeration_Subtype>: For a subtype of character with RM_Size and
	Esize equal to CHAR_TYPE_SIZE, make a signed type if flag_signed_char.
	Copy TYPE_STRING_FLAG from type to subtype.
	<E_Array_Type>: Deal with character index types.
	<E_Array_Subtype>: Likewise.
	* gcc-interface/trans.c (gigi): Replace unsigned_char_type_node with
	char_type_node throughout.
	(build_raise_check): Likewise.
	(get_type_length): Deal with character types.
	(Attribute_to_gnu) <Attr_Pos>: Likewise.  Remove obsolete range check
	code.  Minor tweak.
	<Attr_Pred>: Likewise.
	(Loop_Statement_to_gnu): Likewise.
	(Raise_Error_to_gnu): Likewise.
	<N_Indexed_Component>: Deal with character index types.  Remove
	obsolete code.
	<N_Slice>: Likewise.
	<N_Type_Conversion>: Deal with character types.  Minor tweak.
	<N_Unchecked_Type_Conversion>: Likewise.
	<N_In>: Likewise.
	<N_Op_Eq>: Likewise.
	(emit_index_check): Delete.
	* gcc-interface/utils.c (finish_character_type): New function.
	(gnat_signed_or_unsigned_type_for): Deal with built-in character types.
	* gcc-interface/utils2.c (expand_sloc): Replace unsigned_char_type_node
	with char_type_node.
	(build_call_raise): Likewise.
	(build_call_raise_column): Likewise.
	(build_call_raise_range): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@232604 138bc75d-0d04-0410-961f-82ee72b054a4

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