Adding upstream version 9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

lib/reallocarray.c

@@ -0,0 +1,38 @@
+/* reallocarray function that is glibc compatible.
+
+   Copyright (C) 2017-2025 Free Software Foundation, Inc.
+
+   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 2.1 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/>.  */
+
+/* written by Darshit Shah */
+
+#include <config.h>
+
+#include <stdckdint.h>
+#include <stdlib.h>
+#include <errno.h>
+
+void *
+reallocarray (void *ptr, size_t nmemb, size_t size)
+{
+  size_t nbytes;
+  if (ckd_mul (&nbytes, nmemb, size))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  /* Call realloc, setting errno to ENOMEM on failure.  */
+  return realloc (ptr, nbytes);
+}