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Bug#684953: marked as done (cantor: Crash when trying to get latex rendered output in Cantor)

Your message dated Tue, 29 Jul 2014 11:27:55 +0200
with message-id <20140729092755.GG3410@gnuservers.com.ar>
and subject line Re: cantor: Crash when trying to get latex rendered output in Cantor
has caused the Debian Bug report #684953,
regarding cantor: Crash when trying to get latex rendered output in Cantor
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.

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-- 
684953: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684953
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: cantor
Version: 4:4.8.4-2
Severity: normal

I did a fresh install of cantor and cantor-backend-[maxima,kalgebra] today.

In trying to display a LaTeX rendered formula in Cantor I did the following
steps:

1. Type 'expand((x+y)^2);' and evaluate it. This will return the latex code
   that need to be rendered: \begin{eqnarray*}y^2+2\,x\,y+x^2\end{eqnarray*}

2. Insert a new text entry, write $$ (latex from above) $$ and evaluate it.
   This makes this text (in the text entry) disappear, just the empty box
   frame is left.

3. Trying to click into it leads to a crash (and Dr. Konqi).

The packages recommended by cantor, texlive-latex-base and texlive-binaries,
are installed. (In fact, Lyx is installed with a pretty complete set of 
Texlive packages.)

After installing the debug packages (for cantor and qt) I got a couple (not 
so good) backtraces:

Application: Cantor (cantor), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".
[KCrash Handler]
#6  QTextFrame::firstPosition (this=this@entry=0xa3ed6a0) at text/qtextobject.cpp:489
#7  0xb68b8b6d in QTextFrame::firstCursorPosition (this=0xa3ed6a0) at text/qtextobject.cpp:467
#8  0xb2626f35 in WorksheetEntry::firstPosition (this=0xa3142a0) at ../../src/worksheetentry.cpp:86
#9  0xbfbc014c in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Application: Cantor (cantor), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".
[KCrash Handler]
#6  0xb6865afa in fragment (index=16777488, this=0xa4) at ../../include/QtGui/private/../../../src/gui/text/qfragmentmap_p.h:107
#7  position (this=0xa4, field=0, node=16777488) at ../../include/QtGui/private/../../../src/gui/text/qfragmentmap_p.h:120
#8  position (field=0, node=16777488, this=0xa4) at ../../include/QtGui/private/../../../src/gui/text/qfragmentmap_p.h:860
#9  QTextFrame::firstPosition (this=this@entry=0x89e7dc0) at text/qtextobject.cpp:491
#10 0xb6865b6d in QTextFrame::firstCursorPosition (this=0x89e7dc0) at text/qtextobject.cpp:467
#11 0xb25d3f35 in WorksheetEntry::firstPosition (this=0x8b8e5a8) at ../../src/worksheetentry.cpp:86
#12 0xbf9b3adc in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-3-486
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages cantor depends on:
ii  kde-runtime         4:4.8.4-1
ii  libc6               2.13-33
ii  libkdecore5         4:4.8.4-3
ii  libkdeui5           4:4.8.4-3
ii  libkio5             4:4.8.4-3
ii  libknewstuff3-4     4:4.8.4-3
ii  libkparts4          4:4.8.4-3
ii  libktexteditor4     4:4.8.4-3
ii  libqt4-xml          4:4.8.2-2+b1
ii  libqt4-xmlpatterns  4:4.8.2-2+b1
ii  libqtcore4          4:4.8.2-2+b1
ii  libqtgui4           4:4.8.2-2+b1
ii  libspectre1         0.2.6-2
ii  libstdc++6          4.7.1-2

Versions of packages cantor recommends:
ii  cantor-backend-kalgebra  4:4.8.4-2
ii  texlive-binaries         2012.20120628-2
ii  texlive-latex-base       2012.20120611-3

Versions of packages cantor suggests:
ii  cantor-backend-maxima     4:4.8.4-2
pn  cantor-backend-octave     <none>
pn  cantor-backend-qalculate  <none>
pn  cantor-backend-r          <none>
pn  cantor-backend-sage       <none>
pn  cantor-backend-scilab     <none>

-- no debconf information

--- End Message ---
--- Begin Message --- 
Version: 4:4.13.1-1

Hi,

I can't reproduce the issue in jessie, cantor behaves a bit different now, it
doesn't produce an empty box, so I'm tagging this bug as fixed in the jessie
version, please reopen if you can still reproduce the issue.

Happy hacking,
-- 
“There are two ways of constructing a software design.  One way is to make it
so simple that there are obviously no deficiencies. And the other way is to
make it so complicated that there are no obvious deficiencies."
-- C.A.R. Hoare
Saludos /\/\ /\ >< `/

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