2006-10-31 Robert Dewar <dewar@adacore.com>

	    Hristian Kirtchev  <kirtchev@adacore.com>
	    Javier Miranda  <miranda@adacore.com>
	    Ed Schonberg  <schonberg@adacore.com>
        
	* sem_ch8.adb: Minor error msg rewording
	(Undefined): When checking for misspellings, invert arguments (to get
	expected and found set right)
	(Analyze_Subprogram_Renaming): Propagate Is_Pure, Is_Preelaborated
	(Analyze_Generic_Renaming): Same fix
	(Use_One_Package): Do not take into account the internal entities of
	abstract interfaces during the analysis of entities that are marked
	as potentially use-visible.
	(Find_Type): Handle the case of an attribute reference for
	implementation defined attribute Stub_Type (simply let the analysis of
	the attribute reference rewrite it).
	(Use_One_Type, End_Use_Type): Reject a reference to a limited view of a
	type that appears in a Use_Type clause.
	(Analyze_Object_Renaming): Add support for renaming of the Priority
	attribute.
	(Find_Type): In Ada 2005, a task type can be used within its own body,
	when it appears in an access definition.
	(Analyze_Object_Renaming): Remove warning on null_exclusion.
	(Analyze_Object_Renaming): Introduce checks for required null exclusion
	 in a formal object declaration or in a subtype declaration.
	(Analyze_Subprogram_Renaming): Add call to Check_Null_Exclusion.
	(Check_Null_Exclusion): New local routine to
	Analyze_Subprogram_Renaming. Check whether the formals and return
	profile of a renamed subprogram have required null exclusions when
	their counterparts of the renaming already impose them.
	(In_Generic_Scope): New local routine to Analyze_Object_Renaming.
	Determine whether an entity is inside a generic scope.
	(In_Open_Scope): First pass of documentation update.
	(Find_Expanded_Name): Add support for shadow entities associated with
	limited withed packages. This is required to handle nested packages.
	(Analyze_Package_Renaming): Remove the restriction imposed by AI-217
	that makes a renaming of a limited withed package illegal.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118306 138bc75d-0d04-0410-961f-82ee72b054a4

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