ada: Fix debug info for aliased packed array with unconstrained nominal subtype

The front-end now rewrites it as a renaming when it is initialized with a
function call and the same processing must be applied in the renaming case
as in the regular case for this kind of special objects.

gcc/ada/

	* gcc-interface/decl.cc (gnat_to_gnu_entity) <E_Variable>: Apply the
	specific rewriting done for an aliased object with an unconstrained
	array nominal subtype in the renaming case too.

diff --git a/gcc/ada/gcc-interface/decl.cc b/gcc/ada/gcc-interface/decl.cc
index 20ab185d5778a214a36344cab3f509b49f34c454..95fa508c55986b1d8387b2d71f6710cc831d06fd 100644 (file)
--- a/gcc/ada/gcc-interface/decl.cc
+++ b/gcc/ada/gcc-interface/decl.cc
@@ -1145,6 +1145,18 @@ gnat_to_gnu_entity (Entity_Id gnat_entity, tree gnu_expr, bool definition)
                   the entity as indirect reference to the renamed object.  */
                if (Materialize_Entity (gnat_entity))
                  {
+                   /* If this is an aliased object with an unconstrained array
+                      nominal subtype, we make its type a thin reference, i.e.
+                      the reference counterpart of a thin pointer, exactly as
+                      we would have done in the non-renaming case below.  */
+                   if (Is_Constr_Subt_For_UN_Aliased (gnat_type)
+                       && Is_Array_Type (gnat_und_type)
+                       && !type_annotate_only)
+                     {
+                       tree gnu_array
+                         = gnat_to_gnu_type (Base_Type (gnat_type));
+                       gnu_type = TYPE_OBJECT_RECORD_TYPE (gnu_array);
+                     }
                    gnu_type = build_reference_type (gnu_type);
                    const_flag = true;
                    volatile_flag = false;