This is a regression present on the mainline. The compiler generates very
large data if a variable whose type is an access to an unconstrained array is
initialized with a constant object declaration whose expression is null. The
assembler may issue a warning on the construct.
Tested on i586-suse-linux, applied on the mainline.
2012-02-27 Tristan Gingold <ging...@adacore.com>
* gcc-interface/decl.c (gnat_to_gnu_entity) [E_String_Type,
E_Array_Type]: Reuse dummy fat type for gnu_ptr_template and
gnu_template_type.
2012-02-27 Tristan Gingold <ging...@adacore.com>
* gnat.dg/array20.ad[sb]: New test.
--
Eric Botcazou
Index: gcc-interface/decl.c
===================================================================
--- gcc-interface/decl.c (revision 184594)
+++ gcc-interface/decl.c (working copy)
@@ -2003,8 +2003,8 @@ gnat_to_gnu_entity (Entity_Id gnat_entit
const bool convention_fortran_p
= (Convention (gnat_entity) == Convention_Fortran);
const int ndim = Number_Dimensions (gnat_entity);
- tree gnu_template_type = make_node (RECORD_TYPE);
- tree gnu_ptr_template = build_pointer_type (gnu_template_type);
+ tree gnu_template_type;
+ tree gnu_ptr_template;
tree gnu_template_reference, gnu_template_fields, gnu_fat_type;
tree *gnu_index_types = XALLOCAVEC (tree, ndim);
tree *gnu_temp_fields = XALLOCAVEC (tree, ndim);
@@ -2035,9 +2035,16 @@ gnat_to_gnu_entity (Entity_Id gnat_entit
TYPE_NAME (gnu_fat_type) = NULL_TREE;
/* Save the contents of the dummy type for update_pointer_to. */
TYPE_POINTER_TO (gnu_type) = copy_type (gnu_fat_type);
+ gnu_ptr_template =
+ TREE_TYPE (TREE_CHAIN (TYPE_FIELDS (gnu_fat_type)));
+ gnu_template_type = TREE_TYPE (gnu_ptr_template);
}
else
- gnu_fat_type = make_node (RECORD_TYPE);
+ {
+ gnu_fat_type = make_node (RECORD_TYPE);
+ gnu_template_type = make_node (RECORD_TYPE);
+ gnu_ptr_template = build_pointer_type (gnu_template_type);
+ }
/* Make a node for the array. If we are not defining the array
suppress expanding incomplete types. */
-- { dg-do assemble }
package body Array20 is
type Arr is array (Positive range <>) of Integer;
type P_Arr is access Arr;
N : constant P_Arr := null;
Table : P_Arr := N;
end Array20;
package Array20 is
pragma Elaborate_Body;
end array20;
