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diff --git a/lib_internal/testsuite/sigbus.c b/lib_internal/testsuite/sigbus.c
new file mode 100644
index 0000000..fea5ddc
--- /dev/null
+++ b/lib_internal/testsuite/sigbus.c
@@ -0,0 +1,111 @@
+// $Id: sigbus.c,v 1.3 2005/03/24 12:42:56 ensc Exp $    --*- c -*--
+
+// Copyright (C) 2005 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+//  
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//  
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//  
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#define ENSC_WRAPPERS_UNISTD	1
+#define ENSC_WRAPPERS_SOCKET	1
+#include <wrappers.h>
+
+int wrapper_exit_code = 1;
+
+#define TEST_BLOCKSIZE	0x10000
+static bool			is_gremlin = false;
+static int			sync_p[2];
+
+static void
+testit()
+{
+  if (!is_gremlin) return;
+
+  char	c;
+
+  Esend(sync_p[1], ".", 1, 0);
+  Erecv(sync_p[1], &c,  1, 0);
+}
+
+#define TESTSUITE_COPY_CODE	testit()
+
+#include "../unify.h"
+#include "../unify-copy.c"
+#include "../unify-settime.c"
+
+static bool
+checkTrunc(char const *src,
+	   char const *dst,
+	   struct stat const *st,
+	   size_t pos)
+{
+  pid_t		pid = Efork();
+  
+  if (pid==0) {
+    char		c;
+    
+    Erecv(sync_p[0], &c, 1, 0);
+    Etruncate(src, pos);
+    Esend(sync_p[0], &c, 1, 0);
+    exit(0);
+  }
+
+  unlink(dst);
+  return !copyReg(src, st, dst);
+}
+
+int main()
+{
+  char		f_name0[] = "/tmp/sigbus.XXXXXX";
+  char		f_name1[] = "/tmp/sigbus.XXXXXX";
+  int		fd_src    = mkstemp(f_name0);
+  int		fd_dst    = mkstemp(f_name1);
+  char		buf[TEST_BLOCKSIZE] = { [0] = '\0' };
+  struct stat	st;
+  bool		res;
+  
+  fd_src = 
+  
+  write(fd_src, buf, sizeof(buf));
+  close(fd_src);
+  close(fd_dst);
+
+  unlink(f_name1);
+  stat(f_name0, &st);
+  if (!copyReg(f_name0, &st, f_name1))
+    return EXIT_FAILURE;
+
+
+  is_gremlin = true;
+
+  Esocketpair(AF_LOCAL, SOCK_STREAM, 0, sync_p);
+  signal(SIGCHLD, SIG_IGN);
+
+  res = (checkTrunc(f_name0, f_name1, &st, TEST_BLOCKSIZE/2) &&
+	 checkTrunc(f_name0, f_name1, &st, 0x2345));
+
+  unlink(f_name0);
+  unlink(f_name1);
+  return res ? EXIT_SUCCESS : EXIT_FAILURE;
+}