2008-04-08 Gary Dismukes <dismukes@adacore.com>

2008-04-08  Gary Dismukes  <dismukes@adacore.com>
	    Ed Schonberg  <schonberg@adacore.com>
	    Robert Dewar  <dewar@adacore.com>

	* sem_cat.adb (Validate_RCI_Subprogram_Declaration): Add tests of
	Has_Stream_Attribute_ Definition when checking for available stream
	attributes on parameters of a limited type in Ada 2005. Necessary for
	proper recognition of visible stream attribute clauses.
	(Has_Stream_Attribute_Definition): If the type is derived from a
	private type, then use the derived type's underlying type for checking
	whether it has stream attributes.
	(Validate_Object_Declaration): The check for a user-defined Initialize
	procedure applies also to types with controlled components or a
	controlled ancestor.
	Reject an object declaration in a preelaborated unit if the type is a
	controlled type with an overriding Initialize procedure.
	(Validate_Remote_Access_To_Class_Wide_Type): Return without further
	checking when the parent of a dereference is a selected component and
	the name has not been analyzed.

	* sem_ch4.adb (Analyze_Selected_Component): Add checking for selected
	prefixes that are invalid explicit dereferences of remote
	access-to-class-wide values, first checking whether the selected
	component is a prefixed form of call to a tagged operation.
	(Analyze_Call): Remove code that issues an error for limited function
	calls in illegal contexts, as we now support all of the contexts that
	were forbidden here.
	Allow a function call that returns a task.and appears as the
	prefix of a selected component.
	(Analyze_Reference): Give error message if we try to make a 'Reference
	for an object that is atomic/aliased without its type having the
	corresponding attribute.
	(Analyze_Call): Remove condition checking for attributes to allow
	calls to functions with inherently limited results as prefixes of
	attributes. Remove related comment about Class attributes.
	(Analyze_Selected_Component): If the prefix is a remote type, check
	whether this is a prefixed call before reporting an error.
	(Complete_Object_Operation): If the controlling formal is an access to
	variable reject an actual that is a constant or an access to one.
	(Try_Object_Operation): If prefix is a tagged protected object,retrieve
	primitive operations from base type.

	* exp_ch4.adb (Expand_N_Indexed_Component): Test for prefix that is a
	build-in-place
	function call and call Make_Build_In_Place_Call_In_Anonymous_Context.
	(Expand_N_Selected_Component): Test for prefix that is a build-in-place
	function call and call Make_Build_In_Place_Call_In_Anonymous_Context.
	(Expand_N_Slice): Test for prefix that is a build-in-place function call
	and call Make_Build_In_Place_Call_In_Anonymous_Context.
	(Analyze_Call): Remove code that issues an error for limited function
	calls in illegal contexts, as we now support all of the contexts that
	were forbidden here.
	New calling sequence for Get_Simple_Init_Val
	(Expand_Boolean_Operator): Add call to Silly_Boolean_Array_Xor_Test
	(Expand_N_Op_Not): Add call to Silly_Boolan_Array_Not_Test

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@134026 138bc75d-0d04-0410-961f-82ee72b054a4