Adding upstream version 9.7.

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

lib/malloc.c

@@ -0,0 +1,56 @@
+/* malloc() function that is glibc compatible.
+
+   Copyright (C) 1997-1998, 2006-2007, 2009-2025 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 Jim Meyering and Bruno Haible */
+
+/* Ensure that we call the system's malloc() below.  */
+#define _GL_USE_STDLIB_ALLOC 1
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <errno.h>
+#include <stdckdint.h>
+
+/* Allocate an N-byte block of memory from the heap, even if N is 0.  */
+
+void *
+rpl_malloc (size_t n)
+{
+#if !HAVE_MALLOC_0_NONNULL
+  if (n == 0)
+    n = 1;
+#endif
+
+#if !HAVE_MALLOC_PTRDIFF
+  ptrdiff_t signed_n;
+  if (ckd_add (&signed_n, n, 0))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+#endif
+
+  void *result = malloc (n);
+
+#if !HAVE_MALLOC_POSIX
+  if (result == NULL)
+    errno = ENOMEM;
+#endif
+
+  return result;
+}