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try harder to avoid crashing when debug-printing -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2010-01-18 Ben Wing <ben@xemacs.org> * lisp.h: * print.c: New variable `in_debug_print'. * alloc.c: * alloc.c (free_managed_lcrecord): If gc_in_progress and in_debug_print, just return instead of crashing. This only happens when the programmer calls debug_print() or a variation inside of a debugger, and is probably already diagnosing a crash. * print.c (struct debug_bindings): * print.c (debug_prin1_exit): * print.c (debug_prin1): At entrance, record the old value of in_debug_print in the debug_bindings, set up an unwind-protect to restore the old value, and set in_debug_print to 1. In the unwind-protect, restore the old value.
author Ben Wing <ben@xemacs.org>
date Mon, 18 Jan 2010 06:05:21 -0600
parents 141c2920ea48
children e0db3c197671
line wrap: on
line source

/* Define stream specific console, device, and frame object for XEmacs.
   Copyright (C) 1995 Board of Trustees, University of Illinois.
   Copyright (C) 1995 Free Software Foundation, Inc.
   Copyright (C) 2002 Ben Wing.

This file is part of XEmacs.

XEmacs 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, or (at your option) any
later version.

XEmacs 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 XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */

/* Written by Ben Wing. */

#ifndef INCLUDED_console_stream_impl_h_
#define INCLUDED_console_stream_impl_h_

#include "console-impl.h"
#include "console-stream.h"

DECLARE_CONSOLE_TYPE (stream);

struct stream_console
{
#ifdef NEW_GC
  struct lrecord_header header;
#endif /* NEW_GC */
  FILE *in;
  FILE *out;
  FILE *err;
  int needs_newline;
  Lisp_Object instream;
};

#ifdef NEW_GC
typedef struct stream_console Lisp_Stream_Console;

DECLARE_LRECORD (stream_console, Lisp_Stream_Console);

#define XSTREAM_CONSOLE(x) \
  XRECORD (x, stream_console, Lisp_Stream_Console)
#define wrap_stream_console(p) wrap_record (p, stream_console)
#define STREAM_CONSOLE_P(x) RECORDP (x, stream_console)
#endif /* NEW_GC */

#define CONSOLE_STREAM_DATA(con) CONSOLE_TYPE_DATA (con, stream)

#endif /* INCLUDED_console_stream_impl_h_ */