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[Ada] Fix ICE on instantiated packed array type
- From: Eric Botcazou <ebotcazou at adacore dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Mon, 27 Oct 2014 12:14:34 +0100
- Subject: [Ada] Fix ICE on instantiated packed array type
- Authentication-results: sourceware.org; auth=none
This fixes an assertion failure in relate_alias_sets on an instantiated packed
array type, because of a missing test before invoking the function.
Tested on x86_64-suse-linux, applied on mainline.
2014-10-27 Eric Botcazou <ebotcazou@adacore.com>
* gcc-interface/decl.c (gnat_to_gnu_entity): Apply special treatment
of derived packed array types to constrained subtypes only.
2014-10-27 Eric Botcazou <ebotcazou@adacore.com>
* gnat.dg/specs/pack10.ads: New test.
* gnat.dg/specs/pack10_pkg.ad[sb]: New helper.
--
Eric Botcazou
-- { dg-do compile }
with Pack10_Pkg; use Pack10_Pkg;
package Pack10 is
type Boolean_Vector is array (Positive range <>) of Boolean;
type Packed_Boolean_Vector is new Boolean_Vector;
pragma Pack (Packed_Boolean_Vector);
procedure My_Proc is new Proc (Packed_Boolean_Vector);
end Pack10;
package body Pack10_Pkg is
procedure Proc is begin null; end;
end Pack10_Pkg;
-- { dg-excess-errors "cannot generate code" }
package Pack10_Pkg is
generic
type Vector_Type (<>) is private;
procedure Proc;
end Pack10_Pkg;
Index: gcc-interface/decl.c
===================================================================
--- gcc-interface/decl.c (revision 216725)
+++ gcc-interface/decl.c (working copy)
@@ -5083,8 +5083,10 @@ gnat_to_gnu_entity (Entity_Id gnat_entit
if (Is_Derived_Type (gnat_entity) && !type_annotate_only)
{
Entity_Id gnat_parent_type = Underlying_Type (Etype (gnat_entity));
- /* For packed array subtypes, the implementation type is used. */
+ /* For constrained packed array subtypes, the implementation type is
+ used instead of the nominal type. */
if (kind == E_Array_Subtype
+ && Is_Constrained (gnat_entity)
&& Present (Packed_Array_Impl_Type (gnat_parent_type)))
gnat_parent_type = Packed_Array_Impl_Type (gnat_parent_type);
relate_alias_sets (gnu_type, gnat_to_gnu_type (gnat_parent_type),