/contrib/groff/src/libs/libgroff/new.cpp

 1/* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2003, 2004
 2   Free Software Foundation, Inc.
 3     Written by James Clark (jjc@jclark.com)
 4
 5This file is part of groff.
 6
 7groff is free software; you can redistribute it and/or modify it under
 8the terms of the GNU General Public License as published by the Free
 9Software Foundation; either version 2, or (at your option) any later
10version.
11
12groff is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License along
18with groff; see the file COPYING.  If not, write to the Free Software
19Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
20
21#include "lib.h"
22
23#include <stddef.h>
24#include <stdlib.h>
25
26#include "posix.h"
27#include "nonposix.h"
28
29extern "C" const char *program_name;
30
31static void ewrite(const char *s)
32{
33  write(2, s, strlen(s));
34}
35
36void *operator new(size_t size)
37{
38  // Avoid relying on the behaviour of malloc(0).
39  if (size == 0)
40    size++;
41#ifdef COOKIE_BUG
42  char *p = (char *)malloc(unsigned(size + 8));
43#else /* not COOKIE_BUG */
44  char *p = (char *)malloc(unsigned(size));
45#endif /* not COOKIE_BUG */
46  if (p == 0) {
47    if (program_name) {
48      ewrite(program_name);
49      ewrite(": ");
50    }
51    ewrite("out of memory\n");
52    _exit(-1);
53  }
54#ifdef COOKIE_BUG
55  ((unsigned *)p)[1] = 0;
56  return p + 8;
57#else /* not COOKIE_BUG */
58  return p;
59#endif /* not COOKIE_BUG */
60}
61
62void operator delete(void *p)
63{
64#ifdef COOKIE_BUG
65  if (p)
66    free((void *)((char *)p - 8));
67#else
68  if (p)
69    free(p);
70#endif /* COOKIE_BUG */
71}