Index: exp_disp.adb
===================================================================
--- exp_disp.adb	(revision 191972)
+++ exp_disp.adb	(working copy)
@@ -8537,6 +8537,10 @@
       Body_Stmts            : List_Id;
       Init_Tags_List        : List_Id;
 
+      Covers_Default_Constructor : Entity_Id := Empty;
+
+   --  Start of processing for Set_CPP_Constructor
+
    begin
       pragma Assert (Is_CPP_Class (Typ));
 
@@ -8622,7 +8626,9 @@
                       Defining_Identifier =>
                         Make_Defining_Identifier (Loc,
                           Chars (Defining_Identifier (P))),
-                      Parameter_Type => New_Copy_Tree (Parameter_Type (P))));
+                      Parameter_Type      =>
+                        New_Copy_Tree (Parameter_Type (P)),
+                      Expression          => New_Copy_Tree (Expression (P))));
                   Next (P);
                end loop;
             end if;
@@ -8713,6 +8719,17 @@
 
             Discard_Node (Wrapper_Body_Node);
             Set_Init_Proc (Typ, Wrapper_Id);
+
+            --  If this constructor has parameters and all its parameters
+            --  have defaults then it covers the default constructor. The
+            --  semantic analyzer ensures that only one constructor with
+            --  defaults covers the default constructor.
+
+            if Present (Parameter_Specifications (Parent (E)))
+              and then Needs_No_Actuals (E)
+            then
+               Covers_Default_Constructor := Wrapper_Id;
+            end if;
          end if;
 
          Next_Entity (E);
@@ -8725,6 +8742,46 @@
          Set_Is_Abstract_Type (Typ);
       end if;
 
+      --  Handle constructor that has all its parameters with defaults and
+      --  hence it covers the default constructor. We generate a wrapper IP
+      --  which calls the covering constructor.
+
+      if Present (Covers_Default_Constructor) then
+         Loc := Sloc (Covers_Default_Constructor);
+
+         Body_Stmts := New_List (
+           Make_Procedure_Call_Statement (Loc,
+             Name                   =>
+               New_Reference_To (Covers_Default_Constructor, Loc),
+             Parameter_Associations => New_List (
+               Make_Identifier (Loc, Name_uInit))));
+
+         Wrapper_Id :=
+           Make_Defining_Identifier (Loc, Make_Init_Proc_Name (Typ));
+
+         Wrapper_Body_Node :=
+           Make_Subprogram_Body (Loc,
+             Specification              =>
+               Make_Procedure_Specification (Loc,
+                 Defining_Unit_Name       => Wrapper_Id,
+                 Parameter_Specifications => New_List (
+                   Make_Parameter_Specification (Loc,
+                     Defining_Identifier =>
+                       Make_Defining_Identifier (Loc, Name_uInit),
+                     Parameter_Type      =>
+                       New_Reference_To (Typ, Loc)))),
+
+             Declarations               => No_List,
+
+             Handled_Statement_Sequence =>
+               Make_Handled_Sequence_Of_Statements (Loc,
+                 Statements         => Body_Stmts,
+                 Exception_Handlers => No_List));
+
+         Discard_Node (Wrapper_Body_Node);
+         Set_Init_Proc (Typ, Wrapper_Id);
+      end if;
+
       --  If the CPP type has constructors then it must import also the default
       --  C++ constructor. It is required for default initialization of objects
       --  of the type. It is also required to elaborate objects of Ada types