2007-09-26 Javier Miranda <miranda@adacore.com>

	    Gary Dismukes  <dismukes@adacore.com>

	* einfo.adb (Is_Thunk): New attribute applicable to subprograms. True
	for thunks associated with interface types.

	* einfo.ads: Improve documentatation of Is_Internal
	(Is_Thunk): New attribute applicable to subprograms. True for thunks
	associated with interface types.
	Extensive comment fixes regarding flags that appear in all entities. The
	documentation is now consistent for all such flags (there were a number
	of errors in the documentation in this regard).

	* exp_attr.adb (Expand_N_Attribute_Reference): Minor code cleanup.

	* exp_ch6.adb (Make_Build_In_Place_Call_*): Return immediately if any
	of these procedures are passed a function call that already has
	build-in-place actuals (testing new flag
	Is_Expanded_Build_In_Place_Call). Set the flag on the function call in
	the case where processing continues.
	(Expand_Call): If the call is generated from a thunk body then we
	propagate the extra actuals associated with the accessibility
	level of the access type actuals.

	* sem_ch6.adb (Analyze_Subprogram_Body): Set the Protected_Formal field
	of each extra formal of a protected operation to reference the
	corresponding extra formal of the subprogram denoted by the
	operation's Protected_Body_Subprogram.
	
	* sinfo.ads, sinfo.adb (Is_Expanded_Build_In_Place_Call): New flag on
	N_Function_Call nodes.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@128786 138bc75d-0d04-0410-961f-82ee72b054a4

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