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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: tc2148.vhd,v 1.2 2001-10-26 16:29:46 paw Exp $
+-- $Revision: 1.2 $
+--
+-- ---------------------------------------------------------------------
+
+ENTITY c07s02b04x00p21n01i02148ent IS
+END c07s02b04x00p21n01i02148ent;
+
+ARCHITECTURE c07s02b04x00p21n01i02148arch OF c07s02b04x00p21n01i02148ent IS
+
+ TYPE time_v is array (integer range <>) of time;
+ SUBTYPE time_1 is time_v (1 to 1);
+ SUBTYPE time_null is time_v (1 to 0);
+
+BEGIN
+ TESTING: PROCESS
+ variable result : time_1;
+ variable l_operand : time_null;
+ variable r_operand : time := 78 ns ;
+ BEGIN
+--
+-- The element is treated as an implicit single element array !
+--
+ result := l_operand & r_operand;
+ wait for 5 ns;
+ assert NOT(result(1) = 78 ns)
+ report "***PASSED TEST: c07s02b04x00p21n01i02148"
+ severity NOTE;
+ assert (result(1) = 78 ns)
+ report "***FAILED TEST: c07s02b04x00p21n01i02148 - Concatenation of null and TIME element failed."
+ severity ERROR;
+ wait;
+ END PROCESS TESTING;
+
+END c07s02b04x00p21n01i02148arch;