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readline 8.1

    1: /* xfree.c -- safe version of free that ignores attempts to free NUL */
    2: 
    3: /* Copyright (C) 1991-2010,2017 Free Software Foundation, Inc.
    4: 
    5:    This file is part of the GNU Readline Library (Readline), a library
    6:    for reading lines of text with interactive input and history editing.      
    7: 
    8:    Readline is free software: you can redistribute it and/or modify
    9:    it under the terms of the GNU General Public License as published by
   10:    the Free Software Foundation, either version 3 of the License, or
   11:    (at your option) any later version.
   12: 
   13:    Readline is distributed in the hope that it will be useful,
   14:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   15:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   16:    GNU General Public License for more details.
   17: 
   18:    You should have received a copy of the GNU General Public License
   19:    along with Readline.  If not, see <http://www.gnu.org/licenses/>.
   20: */
   21: 
   22: #define READLINE_LIBRARY
   23: 
   24: #if defined (HAVE_CONFIG_H)
   25: #include <config.h>
   26: #endif
   27: 
   28: #if defined (HAVE_STDLIB_H)
   29: #  include <stdlib.h>
   30: #else
   31: #  include "ansi_stdlib.h"
   32: #endif /* HAVE_STDLIB_H */
   33: 
   34: #include "xmalloc.h"
   35: 
   36: /* **************************************************************** */
   37: /*								    */
   38: /*		   Memory Deallocation.				    */
   39: /*								    */
   40: /* **************************************************************** */
   41: 
   42: /* Use this as the function to call when adding unwind protects so we
   43:    don't need to know what free() returns. */
   44: void
   45: xfree (PTR_T string)
   46: {
   47:   if (string)
   48:     free (string);
   49: }