2007-08-14 Robert Dewar <dewar@adacore.com>
Ed Schonberg <schonberg@adacore.com>
* sem_ch11.adb: Improved warnings for unused variables
* sem_ch3.ads, sem_ch3.adb (Build_Derived_Record_Type): If the ancestor
is a synchronized interface, the derived type is limited.
(Analyze_Object_Declaration): Mark the potential coextensions in the
definition and expression of an object declaration node.
(Build_Derived_Type): For the completion of a private type declaration
with a derived type declaration, chain the parent type's representation
items to the last representation item of the derived type (not the
first one) if they are not present already.
(Analyze_Object_Declaration, Constant_Redeclaration): Allow incomplete
object declaration of forward references to tags.
(Access_Subprogram_Declaration): In Ada2005, anonymous access to
subprogram types can appear as access discriminants of synchronized
types.
(OK_For_Limited_Init_In_05): The initialization is legal is it is a call
given in prefixed form as a selected component.
(Process_Discriminants): If not all discriminants have defaults, place
error message on a default that is present.
(Analyze_Private_Extension_Declaration): Diagnose properly an attempt to
extend a synchronized tagged type.
Improved warnings for unused variables
(Is_Visible_Component): Fix a visibility hole on a component inherited
by a private extension when parent is itself declared as a private
extension, and the derivation is in a child unit.
(Find_Hidden_Interface): Move spec from the package body.
From-SVN: r127426
