Re: [Texmacs-dev] Experimental Qt port

[Alvaro Tejero Cantero]

no, it is much newer (gcc 4.2.3)

On Sun, Oct 5, 2008 at 17:29,  <address@hidden> wrote:
> Alvaro,
>  I've just checked on the Qt site and found this
>
> gcc (GCC) 3.4.6 (Debian 3.4.6-5) on AMD64 (x86_64)
> This compiler is known to miscompile some parts of Qt when doing a release
> build. There are several workarounds:
>
> Use a debug build instead.
> For each miscompilation encountered, recompile the file, removing the -O2
> option.
> Add -fno-gcse to the QMAKE_CXXFLAGS_RELEASE.
>
> it is your system?
>
> max
>
>
>
> On Oct 2, 2008, at 7:42 PM, Alvaro Tejero Cantero 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>_______________________________________________
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>>>>>
>>>>>
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>>>>>
>>>>
>>>>
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