2008-08-04 Javier Miranda <miranda@adacore.com>

	* sem_ch3.adb (Access_Subprogram_Declaration): Adding missing support
	for N_Formal_Object_Declaration nodes. Adding kludge required by
	First_Formal to provide its functionality with access to functions.
	(Replace_Anonymous_Access_To_Protected_Subprogram): Add missing support
	for anonymous access types returned by functions.

	* sem_ch5.adb (Analyze_Assignment): Code cleanup to avoid duplicate
	conversion of null-excluding access types (required only once to force
	the generation of the required runtime check).

	* sem_type.adb (Covers): minor reformating

	* checks.adb (Null_Exclusion_Static_Checks): Avoid reporting errors
	with internally generated nodes. Avoid generating the error inside init
	procs.

	* sem_res.adb (Resolve_Membership_Test): Minor reformating.
	(Resolve_Null): Generate the null-excluding check in case of assignment
	to a null-excluding object.
	(Valid_Conversion): Add missing support for anonymous access to
	subprograms.

	* sem_ch6.adb (Check_Return_Subtype_Indication): Add missing support for
	anonymous access types whose designated type is an itype. This case
	occurs with anonymous access to protected subprograms types.
	(Analyze_Return_Type):  Add missing support for anonymous access to
	protected subprogram.

	* sem_eval.adb (Subtypes_Statically_Match): In case of access to
	subprograms addition of missing check on matching convention. Required
	to properly handle access to protected subprogram types.

	* exp_ch3 (Build_Assignment): Code cleanup removing duplicated check on
	null excluding access types.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@138610 138bc75d-0d04-0410-961f-82ee72b054a4

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