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diff --git a/testsuite/vests/vhdl-93/billowitch/compliant/tc23.vhd b/testsuite/vests/vhdl-93/billowitch/compliant/tc23.vhd
new file mode 100644
index 000000000..61b2a53df
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+++ b/testsuite/vests/vhdl-93/billowitch/compliant/tc23.vhd
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+
+-- Copyright (C) 2001 Bill Billowitch.
+
+-- Some of the work to develop this test suite was done with Air Force
+-- support.  The Air Force and Bill Billowitch assume no
+-- responsibilities for this software.
+
+-- This file is part of VESTs (Vhdl tESTs).
+
+-- VESTs is free software; you can redistribute it and/or modify it
+-- under the terms of the GNU General Public License as published by the
+-- Free Software Foundation; either version 2 of the License, or (at
+-- your option) any later version. 
+
+-- VESTs is distributed in the hope that it will be useful, but WITHOUT
+-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+-- FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+-- for more details. 
+
+-- You should have received a copy of the GNU General Public License
+-- along with VESTs; if not, write to the Free Software Foundation,
+-- Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+
+-- ---------------------------------------------------------------------
+--
+-- $Id: tc23.vhd,v 1.2 2001-10-26 16:29:47 paw Exp $
+-- $Revision: 1.2 $
+--
+-- ---------------------------------------------------------------------
+
+ENTITY c04s02b00x00p09n03i00023ent IS
+END c04s02b00x00p09n03i00023ent;
+
+ARCHITECTURE c04s02b00x00p09n03i00023arch OF c04s02b00x00p09n03i00023ent IS
+  type    T1 is     range 0  to 100;
+  subtype T2 is T1 range 20 to 80 ;
+  subtype T3 is T2 range 40 to 60 ;  -- No_failure_here
+  subtype T4 is T3 range 50 to 50 ;
+BEGIN
+  TESTING: PROCESS
+    variable k : T4 := 50;
+  BEGIN
+    assert NOT(k=50) 
+      report "***PASSED TEST: c04s02b00x00p09n03i00023"
+      severity NOTE;
+    assert (k=50) 
+      report "***FAILED TEST: c04s02b00x00p09n03i00023 - Range constraints for the subtype declarations contradict the range of the subtype indication."
+      severity ERROR;
+    wait;
+  END PROCESS TESTING;
+
+END c04s02b00x00p09n03i00023arch;