2005-02-01  Jeff Johnston  <jjohnstn@redhat.com>

        * dwarf2read.c (die_type): Tolerate a type reference to location
        <0> and treat as unknown type.

2008-02-24  Jan Kratochvil  <jan.kratochvil@redhat.com>

	Port to GDB-6.8pre.

Index: gdb-6.8cvs20080219/gdb/dwarf2read.c
===================================================================
--- gdb-6.8cvs20080219.orig/gdb/dwarf2read.c	2008-02-22 08:10:39.000000000 +0100
+++ gdb-6.8cvs20080219/gdb/dwarf2read.c	2008-02-22 08:17:56.000000000 +0100
@@ -7634,6 +7634,10 @@ die_type (struct die_info *die, struct d
       /* A missing DW_AT_type represents a void type.  */
       return builtin_type (current_gdbarch)->builtin_void;
     }
+  else if (DW_ADDR (type_attr) == 0)
+    /* If we have an invalid reference to 0, ignore it and treat
+       the type as unknown.  */
+    return builtin_type_error;
   else
     type_die = follow_die_ref (die, type_attr, cu);