Re: Bug#117685: xpostit: reproducable segfaults
Thank you for reporting.
I send the copy of this mail to debian-x list,
expecting to get attention from someone with
enough knowledge and skill in Xaw library.
In <E15yf7i-0003AT-00@plato.systems>,
on "Tue, 30 Oct 2001 20:04:33 +0000",
with "Bug#117685: xpostit: reproducable segfaults",
James Troup <james@nocrew.org> wrote:
james> Package: xpostit
james> Version: 3.3.1-7
james> Severity: normal
james>
james> I can reproducably segfault xpostit by starting it up, right clicking,
james> creating a 1.5x2 note, clicking on destroy, clicking on confirm, then
james> right clicking again, and finally selecting 'create a 1.5x2 note'.
james> Unfortunately (?), recompiling it from source makes the segfault go
james> away, so I can't provide a useful backtrace.
james>
james> -- System Information
james> Debian Release: testing/unstable
james> Architecture: i386
james> Kernel: Linux plato 2.2.19 #1 Mon Sep 17 17:52:54 BST 2001 i686
james> Locale: LANG=C, LC_CTYPE=C
james>
james> Versions of packages xpostit depends on:
james> ii libc6 2.2.4-4 GNU C Library: Shared libraries an
james> ii libxaw7 4.1.0-9 X Athena widget set library
james> ii xlibs 4.1.0-9 X Window System client libraries
checked, and reproducable here in sid/unstable.
I have installed same version of packages
(libc6_2.2.4-4, libxaw7(-dev)_4.1.0-9, xlibs_4.1.0-9),
but recompiled binary is still affected by this problem.
And, interestingly, this problem would not happen
in my potato XFree86 3.3.6 environment. So I doubt
this is caused by some inconsistency in libXaw in
XFree86 4.1.0.
Here is the script from gdb output with the binary built with -ggdb:
(gdb) run
Starting program: /usr/local/src/package-build/xpostit/build/xpostit-3.3.1/./xpostit
Program received signal SIGSEGV, Segmentation fault.
0x4005a5ce in _XawTextZapSelection () from /usr/X11R6/lib/libXaw.so.7
(gdb) where
#0 0x4005a5ce in _XawTextZapSelection () from /usr/X11R6/lib/libXaw.so.7
#1 0x4005a557 in _XawTextZapSelection () from /usr/X11R6/lib/libXaw.so.7
#2 0x400c1593 in _XtMatchAtom () from /usr/X11R6/lib/libXt.so.6
#3 0x400c1a0c in _XtMatchAtom () from /usr/X11R6/lib/libXt.so.6
#4 0x400c1f24 in _XtTranslateEvent () from /usr/X11R6/lib/libXt.so.6
#5 0x4009f5a2 in XtDispatchEventToWidget () from /usr/X11R6/lib/libXt.so.6
#6 0x400a077c in _XtSendFocusEvent () from /usr/X11R6/lib/libXt.so.6
#7 0x400a7afc in _XtHandleFocus () from /usr/X11R6/lib/libXt.so.6
#8 0x4009f53f in XtDispatchEventToWidget () from /usr/X11R6/lib/libXt.so.6
#9 0x4009fd6e in _XtOnGrabList () from /usr/X11R6/lib/libXt.so.6
#10 0x400a0108 in XtDispatchEvent () from /usr/X11R6/lib/libXt.so.6
#11 0x400a0519 in XtAppMainLoop () from /usr/X11R6/lib/libXt.so.6
#12 0x0804cb7a in main (argc=1, argv=0xbffffa04) at xpostit.c:228
#13 0x4020566f in __libc_start_main () from /lib/libc.so.6
(gdb)
When I use Xaw6 with libxaw6-dev installed, then
the script of gdb is changed:
(gdb) run
Starting program: /usr/local/src/package-build/xpostit/build/xpostit-3.3.1/./xpostit
Program received signal SIGSEGV, Segmentation fault.
0x400428ff in XawTextSourceRead () from /usr/X11R6/lib/libXaw.so.6
(gdb) where
#0 0x400428ff in XawTextSourceRead () from /usr/X11R6/lib/libXaw.so.6
#1 0x40033ea7 in _XawMultiSaveAsFile () from /usr/X11R6/lib/libXaw.so.6
#2 0x40042477 in XawTextSinkFindDistance () from /usr/X11R6/lib/libXaw.so.6
#3 0x4003dd2f in _XawTextGetSTRING () from /usr/X11R6/lib/libXaw.so.6
#4 0x4003d849 in XawSimpleMenuClearActiveEntry ()
from /usr/X11R6/lib/libXaw.so.6
#5 0x40040fe3 in _XawTextPrepareToUpdate () from /usr/X11R6/lib/libXaw.so.6
#6 0x40042c6c in _XawTextMBToWC () from /usr/X11R6/lib/libXaw.so.6
#7 0x40045a7a in _XawTextZapSelection () from /usr/X11R6/lib/libXaw.so.6
#8 0x400a8593 in _XtMatchAtom () from /usr/X11R6/lib/libXt.so.6
#9 0x400a8a0c in _XtMatchAtom () from /usr/X11R6/lib/libXt.so.6
#10 0x400a8f24 in _XtTranslateEvent () from /usr/X11R6/lib/libXt.so.6
#11 0x400865a2 in XtDispatchEventToWidget () from /usr/X11R6/lib/libXt.so.6
#12 0x4008777c in _XtSendFocusEvent () from /usr/X11R6/lib/libXt.so.6
#13 0x4008eb0b in _XtHandleFocus () from /usr/X11R6/lib/libXt.so.6
#14 0x4008653f in XtDispatchEventToWidget () from /usr/X11R6/lib/libXt.so.6
#15 0x40086d6e in _XtOnGrabList () from /usr/X11R6/lib/libXt.so.6
#16 0x40087108 in XtDispatchEvent () from /usr/X11R6/lib/libXt.so.6
#17 0x40087519 in XtAppMainLoop () from /usr/X11R6/lib/libXt.so.6
#18 0x0804cb7a in main (argc=1, argv=0xbffffa04) at xpostit.c:228
#19 0x401ec66f in __libc_start_main () from /lib/libc.so.6
(gdb)
I've not confirmed where the problem lies, but the segV
does not occur in the code of xpostit when I checked
the execution by "step" command in gdb.
Can you give me some hints ? If you know something,
please let me know.
TIA.
--
Taketoshi Sano: <sano@debian.org>,<sano@debian.or.jp>,<kgh12351@nifty.ne.jp>
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