vfprintf-gnu: Add tests.

* tests/test-vfprintf-gnu.sh: New file, based on
tests/test-vfprintf-posix.sh.
* tests/test-vfprintf-gnu.c: New file, based on
tests/test-vfprintf-posix.c.
* tests/test-fprintf-gnu.h: New file, based on
tests/test-vasnprintf-gnu.c.
* tests/test-printf-gnu.output: New file, based on
tests/test-vasnprintf-gnu.c.
* modules/vfprintf-gnu-tests: New file, based on
modules/vfprintf-posix-tests.

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/test-vfprintf-gnu.c b/tests/test-vfprintf-gnu.c
new file mode 100644
index 0000000000..fb964159b9
--- /dev/null
+++ b/tests/test-vfprintf-gnu.c
@@ -0,0 +1,48 @@
+/* Test of POSIX and GNU compatible vfprintf() function.
+   Copyright (C) 2007-2023 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/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <string.h>
+
+#include "macros.h"
+
+#include "test-fprintf-gnu.h"
+
+static int
+my_fprintf (FILE *fp, const char *format, ...)
+{
+  va_list args;
+  int ret;
+
+  va_start (args, format);
+  ret = vfprintf (fp, format, args);
+  va_end (args);
+  return ret;
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_function (my_fprintf);
+  return 0;
+}