bug#4534: marked as done (assertion failure at window.c:grow_mini_window)

[owner@emacsbugs.donarmstrong.com (Emacs bug Tracking System)]

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Your message dated Mon, 26 Oct 2009 11:05:54 +0100
with message-id <f7ccd24b0910260305i10204d17hbdbfe72251d740f1@mail.gmail.com>
and subject line Re: bug#4534: assertion failure at window.c:grow_mini_window
has caused the Emacs bug report #4534,
regarding assertion failure at window.c:grow_mini_window
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@emacsbugs.donarmstrong.com
immediately.)


-- 
4534: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=4534
Emacs Bug Tracking System
Contact owner@emacsbugs.donarmstrong.com with problems

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GNU Emacs 23.1.50.1 (i386-mingw-nt5.1.2600) of 2009-09-22 on LEKTU
Compiled with gcc (4.3.3-tdm-1-dw2 mingw32) 4.3.3-dw2

I put the attached files into directory C:\temp, including the file test.el:

  (setq resize-mini-windows t)
  (setq ido-enable-flex-matching t)
  (setq ido-max-prospects 14)
  (ido-mode 1)

Then,

   emacs -Q -l c:/temp/test.el
   C-x C-f c:/temp/testfile <TAB> 3 <TAB> 7

Emacs aborts. (Note: As the failure depends on the number of lines in
the minibuffer, tweaking `ido-max-prospects' and/or adding more files
to the directory may be necessary to reproduce the bug.)

The xassert (delta >= 0) at the start of window.c:grow_mini_window
fails, because delta == -1. In resize_mini_window, the call to
xdisp.c:grow_mini_window has height == 5 and WINDOW_TOTAL_LINES (w) ==
6.

    Juanma



Breakpoint 1, w32_abort () at w32fns.c:7344
7344      button = MessageBox (NULL,
(gdb) bt
#0  w32_abort () at w32fns.c:7344
#1  0x011b929c in grow_mini_window (w=0x2f9ec00, delta=-1) at window.c:4637
#2  0x0106d122 in resize_mini_window (w=0x2f9ec00, exact_p=0) at xdisp.c:8809
#3  0x01075952 in redisplay_internal (preserve_echo_area=0) at xdisp.c:11536
#4  0x01073682 in redisplay () at xdisp.c:11031
#5  0x0100c78b in read_char (commandflag=1, nmaps=3, maps=0x82e1e0,
prev_event=48273409, used_mouse_menu=0x82e3c4, end_time=0x0)
    at keyboard.c:2707
#6  0x0101eb23 in read_key_sequence (keybuf=0x82e60c, bufsize=30,
prompt=48273409, dont_downcase_last=0, can_return_switch_frame=1,
    fix_current_buffer=1) at keyboard.c:9464
#7  0x01007a9a in command_loop_1 () at keyboard.c:1640
#8  0x01039cb2 in internal_condition_case (bfun=0x1007276
<command_loop_1>, handlers=48337089, hfun=0x10069ec <cmd_error>) at
eval.c:1513
#9  0x01006e85 in command_loop_2 () at keyboard.c:1357
#10 0x0103970b in internal_catch (tag=48447137, func=0x1006e65
<command_loop_2>, arg=48273409) at eval.c:1249
#11 0x01006dee in command_loop () at keyboard.c:1322
#12 0x01006143 in recursive_edit_1 () at keyboard.c:951
#13 0x0118feae in read_minibuf (map=52443485, initial=48273409,
prompt=49230995, backup_n=0, expflag=0, histvar=54300225, histpos=0,
    defalt=48273409, allow_props=0, inherit_input_method=0) at minibuf.c:739
#14 0x01193225 in Fcompleting_read (prompt=49230995,
collection=48635549, predicate=48273409, require_match=48273409,
    initial_input=48273409, hist=54300225, def=48273409,
inherit_input_method=48273409) at minibuf.c:1823
#15 0x0103df96 in Ffuncall (nargs=7, args=0x82eab0) at eval.c:3076
#16 0x011df195 in Fbyte_code (bytestr=51766515, vector=49979972,
maxdepth=56) at bytecode.c:678
#17 0x0103beb5 in Feval (form=48635773) at eval.c:2382
#18 0x0103970b in internal_catch (tag=49728209, func=0x103b477
<Feval>, arg=48635773) at eval.c:1249
#19 0x011dfdba in Fbyte_code (bytestr=54186131, vector=52804612,
maxdepth=176) at bytecode.c:853
#20 0x0103e7a9 in funcall_lambda (fun=50993028, nargs=6,
arg_vector=0x82f1d4) at eval.c:3232
#21 0x0103e005 in Ffuncall (nargs=7, args=0x82f1d0) at eval.c:3091
#22 0x011df195 in Fbyte_code (bytestr=51674739, vector=50023940,
maxdepth=64) at bytecode.c:678
#23 0x0103e7a9 in funcall_lambda (fun=50992164, nargs=1,
arg_vector=0x82f4f4) at eval.c:3232
#24 0x0103e005 in Ffuncall (nargs=2, args=0x82f4f0) at eval.c:3091
#25 0x011df195 in Fbyte_code (bytestr=49722835, vector=54198164,
maxdepth=16) at bytecode.c:678
#26 0x0103e7a9 in funcall_lambda (fun=50348772, nargs=0,
arg_vector=0x82f834) at eval.c:3232
#27 0x0103e005 in Ffuncall (nargs=1, args=0x82f830) at eval.c:3091
#28 0x0103d017 in apply1 (fn=49253217, arg=48273409) at eval.c:2786
#29 0x011e2be5 in Fcall_interactively (function=49253217,
record_flag=48273409, keys=48306948) at callint.c:395
#30 0x0103dbdc in Ffuncall (nargs=4, args=0x82faf8) at eval.c:3051
#31 0x0103d119 in call3 (fn=48471425, arg1=49253217, arg2=48273409,
arg3=48273409) at eval.c:2871
#32 0x01023a41 in Fcommand_execute (cmd=49253217,
record_flag=48273409, keys=48273409, special=48273409) at
keyboard.c:10453
#33 0x0100a993 in command_loop_1 () at keyboard.c:1901
#34 0x01039cb2 in internal_condition_case (bfun=0x1007276
<command_loop_1>, handlers=48337089, hfun=0x10069ec <cmd_error>) at
eval.c:1513
#35 0x01006e85 in command_loop_2 () at keyboard.c:1357
#36 0x0103970b in internal_catch (tag=48333209, func=0x1006e65
<command_loop_2>, arg=48273409) at eval.c:1249
#37 0x01006e3c in command_loop () at keyboard.c:1336
#38 0x01006143 in recursive_edit_1 () at keyboard.c:951
#39 0x01006618 in Frecursive_edit () at keyboard.c:1013
#40 0x01002a8d in main (argc=4, argv=0xa92840) at emacs.c:1827

Lisp Backtrace:
"completing-read" (0x82eab4)
"byte-code" (0x82ed40)
"ido-read-internal" (0x82f1d4)
"ido-file-internal" (0x82f4f4)
"ido-find-file" (0x82f834)
"call-interactively" (0x82fafc)
(gdb)

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From: Juanma Barranquero <lekktu@gmail.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: martin rudalics <rudalics@gmx.at>, 4534-done@emacsbugs.donarmstrong.com
Subject: Re: bug#4534: assertion failure at window.c:grow_mini_window
Date: Mon, 26 Oct 2009 11:05:54 +0100
Message-ID: <f7ccd24b0910260305i10204d17hbdbfe72251d740f1@mail.gmail.com>

> OK, unless someone opposes I'm going to commit the attached patch.

Done.

    Juanma