src/lib-roff/new.cpp

   1 /*@ FIXME please replace these damn allocators; especially for POD data!
   2  * Copyright (c) 2014 - 2015 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
   3  *
   4  * Copyright (C) 1989 - 1992, 2001, 2003, 2004
   5  *    Free Software Foundation, Inc.
   6  *      Written by James Clark (jjc@jclark.com)
   7  *
   8  * This is free software; you can redistribute it and/or modify it under
   9  * the terms of the GNU General Public License as published by the Free
  10  * Software Foundation; either version 2, or (at your option) any later
  11  * version.
  12  *
  13  * This is distributed in the hope that it will be useful, but WITHOUT ANY
  14  * WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16  * for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with groff; see the file COPYING.  If not, write to the Free Software
  20  * Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.
  21  */
  22
  23 #include "config.h"
  24 #include "lib.h"
  25
  26 #include <stddef.h>
  27 #include <stdlib.h>
  28
  29 #include "nonposix.h"
  30 #include "posix.h"
  31
  32 extern "C" const char *program_name; // FIXME
  33
  34 static void ewrite(const char *s)
  35 {
  36   write(2, s, strlen(s));
  37 }
  38
  39 void *operator new(size_t size)
  40 {
  41   // Avoid relying on the behaviour of malloc(0).
  42   if (size == 0)
  43     size++;
  44 #ifdef COOKIE_BUG
  45   char *p = (char *)malloc(unsigned(size + 8));
  46 #else /* not COOKIE_BUG */
  47   char *p = (char *)malloc(unsigned(size));
  48 #endif /* not COOKIE_BUG */
  49   if (p == 0) {
  50     if (program_name) {
  51       ewrite(program_name);
  52       ewrite(": ");
  53     }
  54     ewrite("out of memory\n");
  55     _exit(-1);
  56   }
  57 #ifdef COOKIE_BUG
  58   ((unsigned *)p)[1] = 0;
  59   return p + 8;
  60 #else /* not COOKIE_BUG */
  61   return p;
  62 #endif /* not COOKIE_BUG */
  63 }
  64
  65 void operator delete(void *p)
  66 {
  67 #ifdef COOKIE_BUG
  68   if (p)
  69     free((void *)((char *)p - 8));
  70 #else
  71   if (p)
  72     free(p);
  73 #endif /* COOKIE_BUG */
  74 }
  75
  76 // s-it2-mode