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-rw-r--r--gnulib-tests/wctob.c38
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diff --git a/gnulib-tests/wctob.c b/gnulib-tests/wctob.c
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+/* Convert wide character to unibyte character.
+ Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2008.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ This file 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <wchar.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+wctob (wint_t wc)
+{
+ char buf[64];
+
+ if (!(MB_CUR_MAX <= sizeof (buf)))
+ abort ();
+ /* Handle the case where WEOF is a value that does not fit in a wchar_t. */
+ if (wc == (wchar_t)wc)
+ if (wctomb (buf, (wchar_t)wc) == 1)
+ return (unsigned char) buf[0];
+ return EOF;
+}