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bug#11291: 24.1.50; crash from `read-from-minibuffer'


From: Drew Adams
Subject: bug#11291: 24.1.50; crash from `read-from-minibuffer'
Date: Fri, 20 Apr 2012 17:57:57 -0700

Dunno whether this will help.  No, I cannot keep the session open until
I hear back from you.  I opened gdb and hit `bt' to get a backtrace.  I tried to
print the selected_window at the point where it seemed like perhaps it was
trying to get the buffer of a window (?).

Probably the info here won't tell you enough, but I don't know what commands to
use to get you the info you might need.
 
Anyway, here is the backtrace from gdb.  The Lisp function
`old-read-from-minibuffer' is just a `defalias' at startup to
the built-in C function `read-from-minibuffer', as follows:
 
(unless (fboundp 'old-read-from-minibuffer)
  (defalias 'old-read-from-minibuffer (symbol-function 'read-from-minibuffer)))
 

$ ./gdb -p 768
GNU gdb (GDB) 7.2
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "mingw32".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Attaching to process 768
[New Thread 768.0x1794]
[New Thread 768.0x170]
[New Thread 768.0xbc4]
Reading symbols from C:\Emacs-24-2012-04-19\bin\emacs.exe...done.
[Switching to Thread 768.0xbc4]
Warning: c:\drews-lisp-20\bin/../lwlib: No such file or directory.
SIGINT is used by the debugger.
Are you sure you want to change it? (y or n) [answered Y; input not from
terminal]
Environment variable "DISPLAY" not defined.
TERM = cygwin
.gdbinit:1328: Error in sourced command file:
No symbol "Vsystem_type" in current context.
(gdb) c
Continuing.
 
Program received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 768.0x170]
0x7c90120f in ntdll!DbgUiConnectToDbg () from C:\WINDOWS\system32\ntdll.dll
(gdb) bt
#0  0x7c90120f in ntdll!DbgUiConnectToDbg () from C:\WINDOWS\system32\ntdll.dll
#1  0x0114efb6 in w32_abort () at w32fns.c:7210
#2  0x01041d97 in die (msg=0x1543718 "assertion failed: BUFFERP
(((w))->buffer)",
    file=0x1542569 "w32fns.c", line=3009) at alloc.c:6378
#3  0x01145e22 in w32_wnd_proc (hwnd=0x1d061a, msg=269, wParam=0, lParam=0)
    at w32fns.c:3009
#4  0x7e418734 in USER32!GetDC () from C:\WINDOWS\system32\user32.dll
#5  0x001d061a in ?? ()
#6  0x0000010d in ?? ()
#7  0x00000000 in ?? ()
 
Lisp Backtrace:
"old-read-from-minibuffer" (0x83e2b4)
"read-from-minibuffer" (0x83e5b4)
"icicle-lisp-vanilla-completing-read" (0x83e8b4)
"byte-code" (0x83eb24)
"completing-read" (0x83eee0)
"let" (0x83f1bc)
"eval" (0x83f314)
"pp-eval-expression" (0x83f604)
"pp-eval-last-sexp" (0x83f944)
"call-interactively" (0x83fb74)
 (gdb) frame 3
#3  0x01145e22 in w32_wnd_proc (hwnd=0x1d061a, msg=269, wParam=0, lParam=0)
    at w32fns.c:3009
3009    w32fns.c: No such file or directory.
        in w32fns.c
(gdb) p selected_window
$2 = 65412101
(gdb) xtype
Lisp_Vectorlike
There is no member named size.
(gdb)

In GNU Emacs 24.1.50.1 (i386-mingw-nt5.1.2600)
 of 2012-04-19 on MARVIN
Bzr revision: 107968 address@hidden
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.6) --no-opt --enable-checking --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include
 -ID:/devel/emacs/libs/libiconv-1.13.1-1-dev/include
 -ID:/devel/emacs/libs/libxml2-2.7.8/include/libxml2'
 






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