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diff --git a/gcc/testsuite/ada/acats/tests/c4/c46051b.ada b/gcc/testsuite/ada/acats/tests/c4/c46051b.ada
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+-- C46051B.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.
+--*
+-- OBJECTIVE:
+--     CHECK THAT ENUMERATION VALUES CAN BE CONVERTED IF THE OPERAND
+--     AND TARGET TYPES ARE RELATED BY DERIVATION, EVEN IF THE OPERAND
+--     AND TARGET TYPES HAVE DIFFERENT REPRESENTATIONS.
+
+-- HISTORY:
+--     JET 07/13/88  CREATED ORIGINAL TEST.
+--     RJW 08/28/89  REMOVED APPLICABILITY CRITERIA AND CHANGED
+--                   EXTENSION TO 'ADA'.  CHANGED THE CODES IN SECOND
+--                   ENUMERATION REPRESENTATION CLAUSE.
+
+WITH REPORT; USE REPORT;
+PROCEDURE C46051B IS
+
+     TYPE ENUM IS (WE, LOVE, WRITING, TESTS);
+
+     TYPE ENUM1 IS NEW ENUM;
+     FOR ENUM1 USE
+          (WE => -1, LOVE => 0, WRITING => 3, TESTS => 9);
+
+     TYPE ENUM2 IS NEW ENUM;
+     FOR ENUM2 USE
+          (WE => 10, LOVE => 15, WRITING => 16, TESTS => 19);
+
+     TYPE ENUM3 IS NEW ENUM1;
+
+     E : ENUM := ENUM'VAL (IDENT_INT (0));
+     E1 : ENUM1 := ENUM1'VAL (IDENT_INT (1));
+     E2 : ENUM2 := ENUM2'VAL (IDENT_INT (2));
+     E3 : ENUM3 := ENUM3'VAL (IDENT_INT (3));
+
+BEGIN
+     TEST ( "C46051B", "CHECK THAT ENUMERATION VALUES CAN BE " &
+                       "CONVERTED IF THE OPERAND AND TARGET TYPES " &
+                       "ARE RELATED BY DERIVATION, EVEN IF THE " &
+                       "OPERAND AND TARGET TYPES HAVE DIFFERENT " &
+                       "REPRESENTATIONS");
+
+     IF ENUM1 (E) /= WE THEN
+          FAILED ( "INCORRECT CONVERSION OF 'ENUM1 (E)'" );
+     END IF;
+
+     IF ENUM (E1) /= LOVE THEN
+          FAILED ( "INCORRECT CONVERSION OF 'ENUM (E1)'" );
+     END IF;
+
+     IF ENUM1 (E2) /= WRITING THEN
+          FAILED ( "INCORRECT CONVERSION OF 'ENUM1 (E2)'" );
+     END IF;
+
+     IF ENUM2 (E3) /= TESTS THEN
+          FAILED ( "INCORRECT CONVERSION OF 'ENUM2 (E3)'" );
+     END IF;
+
+     IF ENUM (E) /= WE THEN
+          FAILED ( "INCORRECT CONVERSION OF 'ENUM (E)'" );
+     END IF;
+
+     IF ENUM2 (E1) /= LOVE THEN
+          FAILED ( "INCORRECT CONVERSION OF 'ENUM2 (E1)'" );
+     END IF;
+
+     IF ENUM3 (E2) /= WRITING THEN
+          FAILED ( "INCORRECT CONVERSION OF 'ENUM3 (E2)'" );
+     END IF;
+
+     IF ENUM (E3) /= TESTS THEN
+          FAILED ( "INCORRECT CONVERSION OF 'ENUM (E3)'" );
+     END IF;
+
+     RESULT;
+
+EXCEPTION
+     WHEN OTHERS =>
+          FAILED ( "EXCEPTION RAISED DURING CONVERSION OF " &
+                   "ENUMERATION TYPES" );
+          RESULT;
+END C46051B;