2012-03-19  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch3.adb (Get_Discriminant_Value): Instead of looking
	at the immediate correcponsing discriminant, traverse a
	potential chain of discriminants produced by type derivations.
	(Root_Corresponding_Discriminant): Traverse a chain of inherited
	discriminants and return the topmost discriminant.

2012-03-19  Bob Duff  <duff@adacore.com>

	* debug.adb: Minor comment change.
	* gnat_ugn.texi: Update documentation for elaboration regarding
	indirect calls.

2012-03-19  Gary Dismukes  <dismukes@adacore.com>

	* exp_ch3.adb (Expand_N_Object_Declaration): In
	the case of an object of a class-wide interface type, where the
	declaration is rewritten as a renaming, call Set_Debug_Info_Needed
	on the renaming entity so that Materialize_Entity will be
	set. Also, change existing call (for other than interface cases)
	to call Set_Debug_Info_Needed rather than Set_Needs_Debug_Info
	(as specified for that flag).

From-SVN: r185526