src/libs/libgroff/new.cpp

   1 /* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2003
   2    Free Software Foundation, Inc.
   3      Written by James Clark (jjc@jclark.com)
   4
   5 This file is part of groff.
   6
   7 groff is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with groff; see the file COPYING.  If not, write to the Free Software
  19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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
  29 extern const char *program_name;
  30
  31 static void ewrite(const char *s)
  32 {
  33   write(2, s, strlen(s));
  34 }
  35
  36 void *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
  62 void 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 }