2007-04-20 Hristian Kirtchev <kirtchev@adacore.com>

	    Gary Dismukes  <dismukes@adacore.com>
	    Robert Dewar  <dewar@adacore.com>
	    Javier Miranda  <miranda@adacore.com>

	* sem_util.ads, sem_util.adb (May_Be_Lvalue): A prefix of an attribute
	reference acts as an lvalue when the attribute name modifies the prefix
	(Is_Coextension_Root): New routine.
	(Mark_Static_Coextensions): New routine.
	(Type_Access_Level): Revise code for checking the level of the
	anonymous access type of a return object.
	(Safe_To_Capture_Value): Not safe to capture if Address_Taken
	(Matches_Prefixed_View_Profile): Remove the no longer necessary
	retrieval of the corresponding controlling record type.
	(Find_Overridden_Synchronized_Primitive): Code cleanup. Add handling of
	concurrent types declared within a generic as well as class wide types.
	Emit a mode incompatibility error whenever a protected entry or routine
	override an interface routine whose first parameter is not of mode
	"out", "in out" or access to variable.
	(Overrides_Synchronized_Primitive): Rename to
	Find_Overridden_Synchronized_Primitive.
	(Collect_Interface_Components): New subprogram that collects all the
	components of a tagged record containing tags of secondary dispatch
	tables.
	(Add_Global_Declaration): New procedure
	(Abstract_Interface_List): Handle properly the case of a subtype of a
	private extension.
	(Type_Access_Level): In the case of a type whose parent scope is a
	return statement, call Type_Access_Level recursively on the enclosing
	function's result type to determine the level of the return object's
	type.
	(Build_Elaboration_Entity): Build name of elaboration entity from the
	scope chain of the entity, rather than the unit name of the file name.
	(Check_Nested_Access): New procedure.
	(Has_Up_Level_Access, Set_Has_Up_Level_Access): New procedures.
	(Find_Direct_Name, Note_Possible_Modification): Use Check_Nested_Access.
	(Get_Renamed_Entity): Utility routine for performing common operation
	of chasing the Renamed_Entity field of an entity.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125453 138bc75d-0d04-0410-961f-82ee72b054a4

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