Re: [Texmacs-dev] Experimental Qt port

[Alvaro Tejero Cantero]

I also have a screenshot of the window appearing after gdb>r (attached)

On Thu, Oct 2, 2008 at 19:42, Alvaro Tejero Cantero <address@hidden> wrote:
> Hi,
>
> On my system your fixes allow compilation, but texmacs.bin segfaults
> inmediately. I ran gdb as shown below, please tell me if I am missing
> some option.
>
> Cheers,
>
> Á.
>
> address@hidden:~/tmp/CVSTeXmacs/src/TeXmacs/bin$ gdb texmacs.bin
> GNU gdb 6.8-debian
> Copyright (C) 2008 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 "x86_64-linux-gnu"...
> (gdb) run
> Starting program: /home/tejero/tmp/CVSTeXmacs/src/TeXmacs/bin/texmacs.bin
> [Thread debugging using libthread_db enabled]
> [New Thread 0x7f9f6cf87780 (LWP 11269)]
> Qt: gdb: -nograb added to command-line options.
>         Use the -dograb option to enforce grabbing.
> TeXmacs] With linked TrueType support
> [New Thread 0x4214c950 (LWP 11310)]
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0x7f9f6cf87780 (LWP 11269)]
> 0x00007f9f6a20ae69 in QString::fromLocal8Bit () from /usr/lib/libQtCore.so.4
> (gdb) n
> Single stepping until exit from function _ZN7QString13fromLocal8BitEPKci,
> which has no line number information.
>
> Program terminated with signal SIGSEGV, Segmentation fault.
> The program no longer exists.
> (gdb)
>
>
> On Thu, Oct 2, 2008 at 17:27,  <address@hidden> wrote:
>> I've commited a patch which should resolve this issue.
>>
>> max
>>
>> On 2 oct. 08, at 17:12, Alvaro Tejero Cantero wrote:
>>
>>> My compilation error is still present with latest CVS update and my
>>> libqtdev is version 4.3.4 (ubuntu 8.04's stock version)
>>>
>>> ./Plugins/Qt/qt_widget.cpp: In member function 'virtual blackbox
>>> qt_view_widget_rep::query(slot, int)':
>>> ./Plugins/Qt/qt_widget.cpp:365: error: cast from 'QWidget*' to 'int'
>>> loses precision
>>> ./Plugins/Qt/qt_widget.cpp: In member function 'virtual blackbox
>>> qt_window_widget_rep::query(slot, int)':
>>> ./Plugins/Qt/qt_widget.cpp:1144: error: cast from 'QWidget*' to 'int'
>>> loses precision
>>>
>>>
>>> Á.
>>>
>>>
>>> On Thu, Oct 2, 2008 at 14:53,  <address@hidden> wrote:
>>>>
>>>> I've done some testing on current cvs texmacs and the situation is the
>>>> following:
>>>>
>>>> - linking with qt4.4.3 release version  leads to crash (gdb session
>>>> attached
>>>> below).
>>>> - linking with qt4.4.3 debug version works fine
>>>> - linking with qt4.3.5 debug or release works fine
>>>>
>>>> So current hypothesis is that it is a problem with the release version of
>>>> 4.4.3. Moreover I just commited some patches which should allow correct
>>>> visualization of characters under Linux (at least for me works on Red Hat
>>>> Enterprise with Linux 2.6.9-78.0.1.ELsmp)
>>>>
>>>> Massimiliano
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On 30 sept. 08, at 18:39, Juan Pablo Romero Méndez wrote:
>>>>
>>>>> Ok, now I've set TEXMACS_PATH  and GUILE_LOAD_PATH properly and
>>>>> compiled with  --enable-debug
>>>>>
>>>>> I'm using Qt 4.4.0
>>>>> gcc: 4.2.1
>>>>> KDE 4.1.1
>>>>>
>>>>> Attached is the output of gdb.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Tue, Sep 30, 2008 at 6:29 AM,  <address@hidden> wrote:
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>>
>>>>>> On 30 sept. 08, at 08:25, Juan Pablo Romero Méndez wrote:
>>>>>>
>>>>>>> Now it compiles with just one change:
>>>>>>>
>>>>>>> in src/Plugins/Qt/QTMGuiHelper.hpp
>>>>>>>
>>>>>>> line 45:
>>>>>>>
>>>>>>> virtual int QTMStyle::pixelMetric(PixelMetric metric, const
>>>>>>> QStyleOption *opt, const QWidget *widget) const;
>>>>>>>
>>>>>>>
>>>>>>> gcc 4.2.1 requires:
>>>>>>>
>>>>>>> virtual int pixelMetric(PixelMetric metric, const QStyleOption *opt,
>>>>>>> const QWidget *widget) const;
>>>>>>>
>>>>>>>
>>>>>>> The problem is in execution; it seg faults with any keystroke.
>>>>>>>
>>>>>>> I've tried debugging it, but I'm not sure how. I tried launching "gdb
>>>>>>> texmacs.bin procID"
>>>>>>>
>>>>>>> this is the result of "bt":
>>>>>>>
>>>>>>> (gdb) r
>>>>>>> The program being debugged has been started already.
>>>>>>> Start it from the beginning? (y or n) y
>>>>>>> Starting program:
>>>>>>> /home/jpablo/extra/texmacs-cvs/libexec/TeXmacs/bin/texmacs.bin
>>>>>>> (no debugging symbols found)
>>>>>>> (no debugging symbols found)
>>>>>>> [Thread debugging using libthread_db enabled]
>>>>>>> [New Thread 0xb6efb9b0 (LWP 12021)]
>>>>>>> TeXmacs] couldn't concretize ? (none)
>>>>>>> TeXmacs] couldn't concretize ? (none)
>>>>>>> TeXmacs] couldn't concretize ? (concat, xxx, ? (concat, fonts, type1))
>>>>>>> TeXmacs] couldn't concretize ? (concat, xxx, ? (concat, fonts, type1))
>>>>>>>
>>>>>>> TeXmacs]
>>>>>>> TeXmacs] Installation problem: please send a bug report.
>>>>>>> TeXmacs] The initialization file init-texmacs.scm could not be found.
>>>>>>> TeXmacs] Please check the values of the environment variables
>>>>>>> TeXmacs] TEXMACS_PATH and GUILE_LOAD_PATH. init-texmacs.scm should
>>>>>>> TeXmacs] be readable and in the directory $TEXMACS_PATH/progs
>>>>>>> TeXmacs] or in the directory $GUILE_LOAD_PATH
>>>>>>> TeXmacs]
>>>>>>>
>>>>>>> Fatal error: Guile could not be found in 'init_guile'
>>>>>>> See file   : init_texmacs.cpp
>>>>>>>
>>>>>>> Program received signal SIGABRT, Aborted.
>>>>>>> [Switching to Thread 0xb6efb9b0 (LWP 12021)]
>>>>>>> 0xffffe410 in __kernel_vsyscall ()
>>>>>>> (gdb) bt
>>>>>>> #0  0xffffe410 in __kernel_vsyscall ()
>>>>>>> #1  0xb70568f5 in raise () from /lib/libc.so.6
>>>>>>> #2  0xb70581e1 in abort () from /lib/libc.so.6
>>>>>>> #3  0x08421b85 in FT_Select_Charmap ()
>>>>>>> #4  0x085ba300 in ?? ()
>>>>>>> #5  0x085950fd in ?? ()
>>>>>>> #6  0x00000001 in ?? ()
>>>>>>> #7  0xbfccac7c in ?? ()
>>>>>>> #8  0x00000018 in ?? ()
>>>>>>> #9  0x00000018 in ?? ()
>>>>>>> #10 0x0000000a in ?? ()
>>>>>>> #11 0x0841fdb0 in FT_Select_Charmap ()
>>>>>>> #12 0x00000020 in ?? ()
>>>>>>> #13 0x0863bc01 in ?? ()
>>>>>>> #14 0x705ba300 in ?? ()
>>>>>>> #15 0xbfccac7c in ?? ()
>>>>>>> #16 0xbfccac78 in ?? ()
>>>>>>> #17 0xbfccac74 in ?? ()
>>>>>>> #18 0xbfccac98 in ?? ()
>>>>>>> #19 0x083237d8 in FT_Select_Charmap ()
>>>>>>> #20 0xbfccac7c in ?? ()
>>>>>>> #21 0xbfccac78 in ?? ()
>>>>>>> #22 0xbfccac74 in ?? ()
>>>>>>> #23 0xbfccac68 in ?? ()
>>>>>>> #24 0xb7095179 in free () from /lib/libc.so.6
>>>>>>> Backtrace stopped: previous frame inner to this frame (corrupt stack?)
>>>>>>> (gdb)
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> If you want to debug by calling directly the executable I think you
>>>>>> should
>>>>>> properly set TEXMACS_PATH  and GUILE_LOAD_PATH  before.
>>>>>> Also, what verision of Qt do you have?
>>>>>>
>>>>>> massimiliano
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Texmacs-dev mailing list
>>>>>> address@hidden
>>>>>> http://lists.gnu.org/mailman/listinfo/texmacs-dev
>>>>>>
>>>>> <gdb-texmacs-qt.txt>_______________________________________________
>>>>> Texmacs-dev mailing list
>>>>> address@hidden
>>>>> http://lists.gnu.org/mailman/listinfo/texmacs-dev
>>>>
>>>>
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>>>>
>>>>
>>>
>>>
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>>
>>
>>
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>

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