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

	* exp_prag.adb (Expand_Pragma_Common_Object): Use a single
	Machine_Attribute pragma internally to implement the user pragma.
	Add processing for pragma Interface so that it is now completely
	equivalent to pragma Import.

	* sem_prag.adb (Analyze_Pragma, case Obsolescent): Extend this pragma
	so that it can be applied to all entities, including record components
	and enumeration literals.
	(Analyze_Pragma, case Priority_Specific_Dispatching): Check whether
	priority ranges are correct, verify compatibility against task
	dispatching and locking policies, and if everything is correct an entry
	is added to the table containing priority specific dispatching entries
	for this compilation unit.
	(Delay_Config_Pragma_Analyze): Delay processing
	Priority_Specific_Dispatching pragmas because when processing the
	pragma we need to access run-time data, such as the range of
	System.Any_Priority.
	(Sig_Flags): Add Pragma_Priority_Specific_Dispatching.
	Allow pragma Unreferenced as a context item
	Add pragma Preelaborable_Initialization
	(Analyze_Pragma, case Interface): Interface is extended so that it is
	now syntactically and semantically equivalent to Import.
	(Analyze_Pragma, case Compile_Time_Warning): Fix error of blowups on
	insertion characters.
	Add handling for Pragma_Wide_Character_Encoding
	(Process_Restrictions_Restriction_Warnings): Ensure that a warning
	never supercedes a real restriction, and that a real restriction
	always supercedes a warning.
	(Analyze_Pragma, case Assert): Set Low_Bound_Known if assert is of
	appropriate form.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118268 138bc75d-0d04-0410-961f-82ee72b054a4

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