Emacs bugs

[Johan Bockgård]

GNU Emacs 22.0.50.62 (x86_64-unknown-linux-gnu, X toolkit) of 2006-01-18

emacs -Q

Insert this code in *scratch* and evaluate it.

(progn
  (setq foo (make-overlay 7 7))
  (let ((str (propertize "x" 'display '(space :align-to 60))))
    (overlay-put foo 'after-string str))
  (goto-char 1))


Bug 1)

Press C-n
   => Args out of range: 0, 0

Backtrace:
    Debugger entered--Lisp error: (args-out-of-range 0 0)
      vertical-motion(1)
      line-move-1(1 nil nil)
      line-move(1 nil nil 1)
      byte-code("..." [arg try-vscroll line-move nil] 5)
      next-line(1 1)
      call-interactively(next-line)

----------------

Bug 2)

Move point back to the beginning of the buffer in the above scenario
and resize the frame to make it less than ~60 columns wide. The buffer
turns blank below the first line and Emacs aborts shortly after.


#0  abort () at emacs.c:463
#1  0x00000000005162ed in Fsignal (error_symbol=9689489, data=10601701) at 
eval.c:1593
#2  0x0000000000501b99 in args_out_of_range (a1=0, a2=0) at data.c:142
#3  0x0000000000557722 in validate_interval_range (object=9647604, 
begin=0x7fffffee5400, end=0x7fffffee5400, force=0) at textprop.c:151
#4  0x0000000000558401 in Ftext_properties_at (position=0, object=Variable 
"object" is not available.
) at textprop.c:585
#5  0x000000000055849c in Fget_text_property (position=Variable "position" is 
not available.
) at textprop.c:606
#6  0x000000000055851c in get_char_property_and_overlay (position=0, 
prop=9920337, object=9647604, overlay=0x0) at textprop.c:671
#7  0x00000000004213c6 in string_buffer_position (w=Variable "w" is not 
available.
) at xdisp.c:4365
#8  0x0000000000442917 in note_mouse_highlight (f=0xf97090, x=533, y=33) at 
xdisp.c:22662
#9  0x000000000048325f in note_mouse_movement (frame=0xf97090, 
event=0x7fffffee5d10) at xterm.c:3614
#10 0x0000000000487484 in handle_one_xevent (dpyinfo=0xe73cd0, 
eventp=0x7fffffee5e70, finish=0x7fffffee5f7c, hold_quit=0x7fffffee6fc0) at 
xterm.c:6556
#11 0x0000000000489759 in XTread_socket (sd=Variable "sd" is not available.
) at xterm.c:7004
#12 0x00000000004b43e5 in read_avail_input (expected=1) at keyboard.c:6710
#13 0x00000000004b45ba in handle_async_input () at keyboard.c:6856
#14 0x00000000004b460a in input_available_signal (signo=Variable "signo" is not 
available.
) at keyboard.c:6898

-- 
Johan Bockgård