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DDD crashes on gnuplot cancelling


From: Panagiotis Issaris
Subject: DDD crashes on gnuplot cancelling
Date: Tue, 20 Mar 2007 14:05:47 +0100
User-agent: Thunderbird 2.0b2 (X11/20070116)

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Hi,

When using DDD to debug FFmpeg, I got a crash of DDD. The crash occurred
when I tried to use the plotting functionality. When choosing an array
to plot, a window appeared saying that gnuplot was about to be started.
Unfortunately, no plot window appeared, so I clicked the cancel button
in that same window. On pressing cancel, DDD crashed. The bug is
reproducable.

address@hidden:/usr/local/src/ffmpeg-pi$ fg
ddd ./ffmpeg_g
X Error of failed request:  BadWindow (invalid Window parameter)
  Major opcode of failed request:  10 (X_UnmapWindow)
  Resource id in failed request:  0x0
  Serial number of failed request:  156380
  Current serial number in output stream:  156383
X Error of failed request:  BadWindow (invalid Window parameter)
  Major opcode of failed request:  10 (X_UnmapWindow)
  Resource id in failed request:  0x0
  Serial number of failed request:  156382
  Current serial number in output stream:  156678

X error (invalid Window parameter).

Oops!  You have found a bug in DDD.

If you can reproduce this bug, please send a bug report
to <address@hidden>, giving a subject like

    DDD 3.3.11 (i486-pc-linux-gnu) gets `BadWindow' error

To enable us to fix the bug, you should include the following information:
* What you were doing to get this message.  Report all the facts.
* The contents of the `~/.ddd/log' file as generated by this session.
Please read also the section "Reporting Bugs" in the DDD manual.

We thank you for your support.


address@hidden:/usr/local/src/ffmpeg-pi$ gdb --version
GNU gdb 6.6-debian
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i486-linux-gnu".

address@hidden:/usr/local/src/ffmpeg-pi$ gcc -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
- --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr
- --enable-shared --with-system-zlib --libexecdir=/usr/lib
- --without-included-gettext --enable-threads=posix --enable-nls
- --program-suffix=-4.1 --enable-__cxa_atexit --enable-clocale=gnu
- --enable-libstdcxx-debug --enable-mpfr --enable-checking=release
i486-linux-gnu
Thread model: posix
gcc version 4.1.2 (Ubuntu 4.1.2-0ubuntu4)

address@hidden:/usr/local/src/ffmpeg-pi$ file ffmpeg_g
ffmpeg_g: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for
GNU/Linux 2.6.0, dynamically linked (uses shared libs), not stripped

address@hidden:/usr/local/src/ffmpeg-pi$ file /usr/bin/ddd
/usr/bin/ddd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
for GNU/Linux 2.2.0, dynamically linked (uses shared libs), stripped

address@hidden:/usr/local/src/ffmpeg-pi$ uname -a
Linux issaris 2.6.20-9-generic #2 SMP Mon Feb 26 03:01:44 UTC 2007 i686
GNU/Linux

address@hidden:/usr/local/src/ffmpeg-pi$ cat /proc/version
Linux version 2.6.20-9-generic (address@hidden) (gcc version 4.1.2 (Ubuntu
4.1.2-0ubuntu3)) #2 SMP Mon Feb 26 03:01:44 UTC 2007

With friendly regards,
Takis
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