2007-08-14 Ed Schonberg <schonberg@adacore.com>

	* sem_ch4.adb (Try_Class_Wide_Operation): use base type of first
	parameter to determine whether operation applies to the prefix.
	(Complete_Object_Operation): If actual has an access type and
	controlling formal is not an in_parameter, reject the actual if it is
	an access_to_constant type.
	(Try_Primitive_Operation): If the type of the prefix is a formal tagged
	type, the candidate operations are found in the scope of declaration of
	the type, because the type has no primitive subprograms.
	(Analyze_Selected_Component): If prefix is class-wide, and root type is
	a private extension, only examine visible components before trying to
	analyze as a prefixed call.
	Change Entity_List to Type_To_Use, for better readability.
	(Has_Fixed_Op): Use base type when checking whether the type of an
	operator has a user-defined multiplication/division
	(Check_Arithmetic_Pair): Use Ada 2005 rules to remove ambiguities when
	user-defined operators are available for fixed-point types.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@127444 138bc75d-0d04-0410-961f-82ee72b054a4

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