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jwilke's changes:
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other changes unknown to me.

/* a strsignal implementation

  Copyright (C) 1995 Free Software Foundation, Inc.

  This file is part of Gforth.

  Gforth 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; either version 2
  of the License, or (at your option) any later version.

  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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "config.h"
#include <stdio.h>
#include <signal.h>
#include <unistd.h>


char *strsignal(int sig)
{
  static char errbuf[16];

#if defined(HAVE_SYS_SIGLIST) && defined(NSIG)
#if !defined(SYS_SIGLIST_DECLARED)
  extern const char * const sys_siglist[];
#endif
  if (sig>0 && sig<NSIG)
    return sys_siglist[sig];
#endif /* defined(HAVE_SYS_SIGLIST) && defined(NSIG) */
  sprintf(errbuf,"signal %d",sig);
  return errbuf;
}