2006-10-31 Ed Schonberg <schonberg@adacore.com>

	    Javier Miranda  <miranda@adacore.com>
	    Robert Dewar  <dewar@adacore.com>

	* sem_ch4.adb (Try_Primitive_Operation): Code cleanup to ensure that we
	generate the same errors compiling under -gnatc.
	(Try_Object_Operation): If no candidate interpretation succeeds, but
	there is at least one primitive operation with the right name, report
	error in call rather than on a malformed selected component.
	(Analyze_Selected_Component): If the prefix is an incomplete type from
	a limited view, and the full view is available, use the full view to
	determine whether this is a prefixed call to a primitive operation.
	(Operator_Check): Verify that a candidate interpretation is a binary
	operation before checking the type of its second formal.
	(Analyze_Call): Add additional warnings for function call contexts not
	yet supported.
	(Analyze_Allocator): Move the check for "initialization not allowed for
	limited types" after analyzing the expression. This is necessary,
	because OK_For_Limited_Init looks at the structure of the expression.
	Before analysis, we don't necessarily know what sort of expression it
	is. For example, we don't know whether F(X) is a function call or an
	indexed component; the former is legal in Ada 2005; the latter is not.
	(Analyze_Allocator): Correct code for AI-287 -- extension aggregates
	were missing. We also didn't handle qualified expressions. Now also
	allow function calls. Use new common routine OK_For_Limited_Init.
	(Analyze_Type_Conversion): Do not perform some legality checks in an
	instance, because the error message will be redundant or spurious.
	(Analyze_Overloaded_Selected_Component): Do not do style check when
	setting an entity, since we do not know it is the right entity yet.
	(Analyze_Selected_Component): Move Generate_Reference call to Sem_Res
	(Analyze_Overloaded_Selected_Component): Same change
	(Analyze_Selected_Component): Remove unnecessary prefix type retrieval
	since regular incomplete subtypes are transformed into corresponding
	subtypes of their full views.
	(Complete_Object_Operation): Treat name of transformed subprogram call
	as coming from source, for browsing purposes.
	(Try_Primitive_Operation): If formal is an access parameter, compare
	with base type of object to determine whether it is a primitive
	operation.
	(Operator_Check): If no interpretation of the operator matches, check
	whether a use clause on any candidate might make the operation legal.
	(Try_Class_Wide_Operation): Check whether the first parameter is an
	access type whose designated type is class-wide.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118302 138bc75d-0d04-0410-961f-82ee72b054a4

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