2007-04-20  Ed Schonberg  <schonberg@adacore.com>

	* exp_util.ads, exp_util.adb (Expand_Subtype_From_Expr): In Ada2005, an
	object of a limited type can be initialized with a call to a function
	that returns in place. If the limited type has unknown discriminants,
	and the underlying type is a constrained composite type, build an actual
	subtype from the function call, as is done for private types.
	(Side_Effect_Free): An expression that is the renaming of an object or
	whose prefix is the renaming of a object, is not side-effect free
	because it may be assigned through the renaming and its value must be
	captured in a temporary.
	(Has_Controlled_Coextensions): New routine.
	(Expand_Subtype_From_Expr): Do nothing if type is a limited interface,
	as is done for other limited types.
	(Non_Limited_Designated_Type): new predicate.
	(Make_CW_Equivalent_Type): Modified to handle class-wide interface
	objects.
	Remove all handling of with_type clauses.

        * par-ch10.adb: Remove all handling of with_type clauses.

	* lib-load.ads, lib-load.adb (Load_Main_Source): Do not get the
	checksum if the main source could not be parsed.
	(Loat_Unit): When processing a child unit, determine properly whether
	the parent unit is a renaming when the parent is itself a child unit.
	Remove handling of with_type clauses.

	* sinfo.ads, sinfo.adb (Is_Static_Coextension): New function.
	(Set_Is_Static_Coextension): New procedure.
	(Has_Local_Raise): New function
	(Set_Has_Local_Raise): New procedure
	(Renaming_Exception): New field
	(Has_Init_Expression): New flag
	(Delay_Finalize_Attach): Remove because flag is obsolete.
	(Set_Delay_Finalize_Attach): Remove because flag is obsolete.
	Remove all handling of with_type clauses.
	(Exception_Junk): Can now be set in N_Block_Statement

From-SVN: r125410