Aidan Kehoe <kehoea(a)parhasard.net&gt; writes: > Ar an fichiú lá de mí na Nollaig, scríobh Thomas Mittelstaedt: > > > tmstaedt＠buildhp3$ > > Fatal error: assertion failed, file window.c, line 2466, RECORD_TYPEP > > (obj, lrecord_type_window) > > WARNING: Unable to auto-save your files properly. > > Some or all may in fact have been auto-saved. > > [...] > > > > (gdb) bt > > #0 0xc01ffd40 in kill () from /usr/lib/libc.2 > > #1 0x000dfcf0 in fatal_error_signal (sig=11) at emacs.c:3800 > > #2 <signal handler called> > > #3 0x00312e28 in Fnext_window (window=1768846945, minibuf=1074144988, > > which_frames=1074063364, > > which_devices=1074063364) at window.c:2499 > > This is the first “if” test here: > > while (1) > { > if (!NILP (XWINDOW (window)->hchild)) > window = XWINDOW (window)->hchild; > else if (!NILP (XWINDOW (window)->vchild)) > window = XWINDOW (window)->vchild; > else break; > } > > So ‘window’ is something that isn’t a window. Mike, you had lots to do with > the window code when rewriting the window configuration stuff in Lisp; do > you have any idea what provoked this? That was mostly above that level, however, so I don't think I can provide specific help. However, doesn't the Lisp backtrace indicate that the window is nil?

Lisp backtrace follows: # (unwind-protect ...) # (unwind-protect ...) # (unwind-protect ...) # (unwind-protect ...) # (unwind-protect ...) # (unwind-protect ...) # (unwind-protect ...) next-window(nil)