kc3-lang/libbsd/src/reallocf.c

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• Hash : 8e8834d8
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  Date : 2017-06-14T02:53:35
  

  Remove RCSID tags
  
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• src/reallocf.c

• /*-
   * Copyright (c) 1998, M. Warner Losh <imp@freebsd.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #include <sys/cdefs.h>
  
  #include <stdlib.h>
  
  void *
  reallocf(void *ptr, size_t size)
  {
  	void *nptr;
  
  	nptr = realloc(ptr, size);
  
  	/*
  	 * When the System V compatibility option (malloc "V" flag) is
  	 * in effect, realloc(ptr, 0) frees the memory and returns NULL.
  	 * So, to avoid double free, call free() only when size != 0.
  	 * realloc(ptr, 0) can't fail when ptr != NULL.
  	 */
  	if (!nptr && ptr && size != 0)
  		free(ptr);
  	return (nptr);
  }
  

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