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diff --git a/tests/unistr/test-u32-cmp.c b/tests/unistr/test-u32-cmp.c
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+/* Test of u32_cmp() function.
+ Copyright (C) 2010 Free Software Foundation, Inc.
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
+
+#include <config.h>
+
+#include "unistr.h"
+
+#include "zerosize-ptr.h"
+#include "macros.h"
+
+#define UNIT uint32_t
+#define U_CMP u32_cmp
+#define MAGIC 0xBADFACE
+#include "test-cmp.h"
+
+int
+main ()
+{
+ test_cmp ();
+
+ /* Test comparison with non-BMP characters. */
+ {
+ static const UNIT input1[] = { 0x1D51F };
+ static const UNIT input2[] = { 0xFEFF };
+ ASSERT (U_CMP (input1, input2, 1) > 0);
+ ASSERT (U_CMP (input2, input1, 1) < 0);
+ }
+
+ return 0;
+}