$NetBSD: patch-ad,v 1.4 2009/08/03 13:18:37 joerg Exp $

--- utility.c.orig	2008-04-16 00:41:49.000000000 +0200
+++ utility.c
@@ -388,8 +388,10 @@ void ClearHashTableScores(void)
  */
 void CraftyExit(int exit_type)
 {
-  shared->abort_search = 1;
-  shared->quit = 1;
+  if (shared) {
+     shared->abort_search = 1;
+     shared->quit = 1;
+  }
   exit(exit_type);
 }
 
@@ -1541,10 +1543,10 @@ void Print(int vb, char *fmt, ...)
   va_list ap;
 
   va_start(ap, fmt);
-  if (vb & shared->display_options)
+  if (shared == NULL || (vb & shared->display_options))
     vprintf(fmt, ap);
   fflush(stdout);
-  if (shared->time_limit > 99 || shared->tc_time_remaining > 6000 || vb == 4095) {
+  if (vb == 4095 || shared->time_limit > 99 || shared->tc_time_remaining > 6000) {
     va_start(ap, fmt);
     if (log_file)
       vfprintf(log_file, fmt, ap);
@@ -2788,6 +2790,15 @@ void *SharedMalloc(size_t size, int tid)
 #if defined(UNIX)
   int shmid;
   void *shared;
+  long pagesize;
+
+  /* round to page boundary */
+  pagesize = sysconf(_SC_PAGESIZE);
+  if (pagesize == -1) {
+     /* just in case, guess */
+     pagesize = 4096;
+  }
+  size = size + pagesize - (size % pagesize);
 
   shmid = shmget(IPC_PRIVATE, size, (IPC_CREAT | 0600));
   if (shmid < 0) {