File: malloc.c

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/* malloc() function that is glibc compatible.

   Copyright (C) 1997-1998, 2006-2007, 2009-2018 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or
   modify it under the terms of either:

     * 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.

   or

     * the GNU General Public License as published by the Free
       Software Foundation; either version 2 of the License, or (at your
       option) any later version.

   or both in parallel, as here.
   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 Jim Meyering and Bruno Haible */

#define _GL_USE_STDLIB_ALLOC 1
#include <config.h>
/* Only the AC_FUNC_MALLOC macro defines 'malloc' already in config.h.  */
#ifdef malloc
# define NEED_MALLOC_GNU 1
# undef malloc
/* Whereas the gnulib module 'malloc-gnu' defines HAVE_MALLOC_GNU.  */
#elif GNULIB_MALLOC_GNU && !HAVE_MALLOC_GNU
# define NEED_MALLOC_GNU 1
#endif

#include <stdlib.h>

#include <errno.h>

/* Allocate an N-byte block of memory from the heap.
   If N is zero, allocate a 1-byte block.  */

void *
rpl_malloc (size_t n)
{
  void *result;

#if NEED_MALLOC_GNU
  if (n == 0)
    n = 1;
#endif

  result = malloc (n);

#if !HAVE_MALLOC_POSIX
  if (result == NULL)
    errno = ENOMEM;
#endif

  return result;
}