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diff --git a/testsuite/vests/vhdl-93/billowitch/compliant/tc166.vhd b/testsuite/vests/vhdl-93/billowitch/compliant/tc166.vhd
new file mode 100644
index 000000000..1b5475454
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+++ b/testsuite/vests/vhdl-93/billowitch/compliant/tc166.vhd
@@ -0,0 +1,73 @@
+
+-- 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: tc166.vhd,v 1.2 2001-10-26 16:29:42 paw Exp $
+-- $Revision: 1.2 $
+--
+-- ---------------------------------------------------------------------
+
+ENTITY c04s03b03x00p01n01i00166ent IS
+END c04s03b03x00p01n01i00166ent;
+
+ARCHITECTURE c04s03b03x00p01n01i00166arch OF c04s03b03x00p01n01i00166ent IS
+
+BEGIN
+  TESTING: PROCESS
+    variable    V1    : INTEGER := 1;
+    alias       V1_A1    : INTEGER is V1;
+    variable   pass   : integer := 0;
+  BEGIN
+    assert V1    = 1;
+    assert V1_A1    = 1;
+    if (V1 /= 1 or V1_A1 /= 1) then
+      pass := 1;
+    end if;
+
+
+    V1 := 2;      -- change value...
+    assert V1    = 2;
+    assert V1_A1    = 2;   -- ... check read
+    if (V1 /= 2 or V1_A1 /= 2) then
+      pass := 1;
+    end if;
+
+    V1_A1 := 3;      -- change value using alias
+    assert V1    = 3;   -- ... check that value changed
+    assert V1_A1    = 3;
+    if (V1 /= 3 or V1_A1 /= 3) then
+      pass := 1;
+    end if;
+
+    wait for 5 ns;
+    assert NOT(   pass = 0   ) 
+      report "***PASSED TEST: c04s03b03x00p01n01i00166"
+      severity NOTE;
+    assert (   pass = 0   ) 
+      report "***FAILED TEST: c04s03b03x00p01n01i00166 - Alias for variable object test failed."
+      severity ERROR;
+    wait;
+  END PROCESS TESTING;
+
+END c04s03b03x00p01n01i00166arch;