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+-- C37305A.ADA
+
+--                             Grant of Unlimited Rights
+--
+--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
+--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 
+--     unlimited rights in the software and documentation contained herein.
+--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 
+--     this public release, the Government intends to confer upon all 
+--     recipients unlimited rights  equal to those held by the Government.  
+--     These rights include rights to use, duplicate, release or disclose the 
+--     released technical data and computer software in whole or in part, in 
+--     any manner and for any purpose whatsoever, and to have or permit others 
+--     to do so.
+--
+--                                    DISCLAIMER
+--
+--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
+--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 
+--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
+--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 
+--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
+--     PARTICULAR PURPOSE OF SAID MATERIAL.
+--*
+-- CHECK THAT CHOICES DENOTING A NULL RANGE OF VALUES ARE PERMITTED,
+-- AND THAT FOR CHOICES CONSISTING OF A SUBTYPE NAME FOLLOWED BY A
+-- RANGE CONSTRAINT WHERE THE LOWER BOUND IS GREATER THAN THE UPPER
+-- BOUND, THE BOUNDS NEED NOT BE IN THE RANGE OF THE SUBTYPE VALUES.
+
+-- CHECK THAT AN OTHERS ALTERNATIVE CAN BE PROVIDED EVEN IF ALL VALUES
+-- OF THE CASE EXPRESSION HAVE BEEN COVERED BY PRECEDING ALTERNATIVES.
+
+-- ASL 7/14/81
+-- JWC 6/28/85   RENAMED TO -AB
+
+WITH REPORT;
+PROCEDURE C37305A IS
+
+     USE REPORT;
+
+BEGIN
+     TEST ("C37305A","NULL RANGES ALLOWED IN CHOICES FOR VARIANT " &
+           "PARTS.  OTHERS ALTERNATIVE ALLOWED AFTER ALL VALUES " &
+           "PREVIOUSLY COVERED");
+
+     DECLARE
+          SUBTYPE ST IS INTEGER RANGE 1..10;
+
+          TYPE REC(DISC : ST := 1) IS
+               RECORD
+                    CASE DISC IS
+                         WHEN 0..-1 => NULL;
+                         WHEN 1..-3 => NULL;
+                         WHEN 6..5 =>
+                              COMP : INTEGER;
+                         WHEN 11..10 => NULL;
+                         WHEN 15..12 => NULL;
+                         WHEN 11..0 => NULL;
+                         WHEN 1..10 => NULL;
+                         WHEN OTHERS => NULL;
+                    END CASE;
+               END RECORD;
+
+          R : REC;
+     BEGIN
+          R := (DISC => 4);
+
+          IF EQUAL(3,4) THEN
+               R := (DISC => 7);
+          END IF;
+
+          IF R.DISC /= 4 THEN
+               FAILED ("ASSIGNMENT FAILED");
+          END IF;
+     EXCEPTION
+          WHEN OTHERS =>
+               FAILED ("EXCEPTION RAISED");
+     END;
+
+     RESULT;
+
+END C37305A;