2024-11-05 Bruno Haible <bruno@clisp.org>
+ strndup tests: Verify N3322 functionality.
+ * tests/test-strndup.c: New file.
+ * modules/strndup-tests: New file.
+
strndup: Guarantee N3322 functionality.
* m4/strndup.m4 (gl_FUNC_STRNDUP): Check against the AIX bug.
* doc/posix-functions/strndup.texi: Mention the AIX bug.
--- /dev/null
+/* Test of strndup() function.
+ Copyright (C) 2024 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 <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <string.h>
+
+#include <stddef.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+ int volatile value;
+
+ /* Test zero-length operations on NULL pointers, allowed by
+ <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3322.pdf>. */
+
+ value = (strndup (NULL, 0) != NULL);
+ ASSERT (value);
+
+ return test_exit_status;
+}