[Ada] Generate debug info entry for user-defined access subtype

This is consistent with the other kinds of subtypes.

gcc/ada/

	* gcc-interface/decl.cc (gnat_to_gnu_entity) <E_Access_Subtype>: Do
	not reuse the TYPE_DECL of the base type.

diff --git a/gcc/ada/gcc-interface/decl.cc b/gcc/ada/gcc-interface/decl.cc
index 2510ee8bc67d235b99b887acee2bd448f46d13d1..e7bfc015379dfa189962e8684289a77c9de8ac3a 100644 (file)
--- a/gcc/ada/gcc-interface/decl.cc
+++ b/gcc/ada/gcc-interface/decl.cc
@@ -3867,7 +3867,7 @@ gnat_to_gnu_entity (Entity_Id gnat_entity, tree gnu_expr, bool definition)
     case E_Access_Subtype:
       /* We treat this as identical to its base type; any constraint is
         meaningful only to the front-end.  */
-      gnu_decl = gnat_to_gnu_entity (gnat_equiv_type, NULL_TREE, false);
+      gnu_type = gnat_to_gnu_type (gnat_equiv_type);
       maybe_present = true;
 
       /* The designated subtype must be elaborated as well, if it does
@@ -3877,11 +3877,10 @@ gnat_to_gnu_entity (Entity_Id gnat_entity, tree gnu_expr, bool definition)
          && Is_Frozen (Directly_Designated_Type (gnat_entity))
          && No (Freeze_Node (Directly_Designated_Type (gnat_entity))))
        {
-         tree gnu_base_type = TREE_TYPE (gnu_decl);
-         tree gnu_desig_base_type
-           = TYPE_IS_FAT_POINTER_P (gnu_base_type)
-             ? TREE_TYPE (TREE_TYPE (TYPE_FIELDS (gnu_base_type)))
-             : TREE_TYPE (gnu_base_type);
+         tree gnu_desig_type
+           = TYPE_IS_FAT_POINTER_P (gnu_type)
+             ? TREE_TYPE (TREE_TYPE (TYPE_FIELDS (gnu_type)))
+             : TREE_TYPE (gnu_type);
 
          /* If we are to defer elaborating incomplete types, make a dummy
             type node and elaborate it later.  */
@@ -3898,7 +3897,7 @@ gnat_to_gnu_entity (Entity_Id gnat_entity, tree gnu_expr, bool definition)
 
          /* Otherwise elaborate the designated subtype only if its base type
             has already been elaborated.  */
-         else if (!TYPE_IS_DUMMY_P (gnu_desig_base_type))
+         else if (!TYPE_IS_DUMMY_P (gnu_desig_type))
            gnat_to_gnu_entity (Directly_Designated_Type (gnat_entity),
                                NULL_TREE, false);
        }