-- Common case of explicit object initialization
else
+ -- Small optimization: if the expression is a function call and
+ -- the object is stand-alone, not declared at library level and of
+ -- a class-wide type, then we capture the result of the call into
+ -- a temporary, with the benefit that, if the result's type does
+ -- not need finalization, nothing will be finalized and, if it
+ -- does, the temporary only will be finalized by means of a direct
+ -- call to the Finalize primitive if the result's type is not a
+ -- class-wide type; whereas, in both cases, the stand-alone object
+ -- itself would be finalized by means of a dispatching call to the
+ -- Deep_Finalize routine.
+
+ if Nkind (Expr_Q) = N_Function_Call
+ and then not Special_Ret_Obj
+ and then not Is_Library_Level_Entity (Def_Id)
+ and then Is_Class_Wide_Type (Typ)
+ then
+ Remove_Side_Effects (Expr_Q);
+ end if;
+
-- In most cases, we must check that the initial value meets any
-- constraint imposed by the declared type. However, there is one
-- very important exception to this rule. If the entity has an