[Digikam-devel] [Bug 273765] replacing pgf files with an open digikam lead to reproducible crash

[Gilles Caulier]

https://bugs.kde.org/show_bug.cgi?id=273765





--- Comment #53 from Gilles Caulier <caulier gilles gmail com>  2011-06-20 15:25:55 ---
Raphael,

Trying to find a solution to OpenMP support in libpgf, is tried to turn off
OpenMP with PGF encoder/decoder in digiKam PGFUtils methods relevant of thumbs
database.

libPGF still compiled with OpenMP support. digiKam crash into libpgf :

Thread 2 (Thread 0xa8c3ab70 (LWP 7763)):
[KCrash Handler]
#6  0xb67ede11 in CDecoder::DecodeBuffer (this=0xa746628) at
/mnt/data/Devel/GIT/2.x/core/libs/3rdparty/libpgf/Decoder.cpp:571
#7  0xb67ed900 in CDecoder::DequantizeValue (this=0xa746628, band=0xa732f2c,
bandPos=0, quantParam=0) at
/mnt/data/Devel/GIT/2.x/core/libs/3rdparty/libpgf/Decoder.cpp:429
#8  0xb67ed187 in CDecoder::Partition (this=0xa746628, band=0xa732f2c,
quantParam=0, width=64, height=43, startPos=0, pitch=64) at
/mnt/data/Devel/GIT/2.x/core/libs/3rdparty/libpgf/Decoder.cpp:249
#9  0xb67f9fe7 in CSubband::PlaceTile (this=0xa732f2c, decoder=...,
quantParam=0, tile=false, tileX=0, tileY=0) at
/mnt/data/Devel/GIT/2.x/core/libs/3rdparty/libpgf/Subband.cpp:230
#10 0xb67f19b9 in CPGFImage::Read (this=0xa8c398d0, level=0, cb=0, data=0x0) at
/mnt/data/Devel/GIT/2.x/core/libs/3rdparty/libpgf/PGFimage.cpp:398
#11 0xb67fc342 in Digikam::readPGFImageData (data=..., img=...) at
/mnt/data/Devel/GIT/2.x/core/libs/threadimageio/pgfutils.cpp:78
#12 0xb67ddbfd in Digikam::ThumbnailCreator::loadFromDatabase (this=0xa3a8f00,
info=...) at
/mnt/data/Devel/GIT/2.x/core/libs/threadimageio/thumbnailcreator.cpp:884
#13 0xb67da8fc in Digikam::ThumbnailCreator::load (this=0xa3a8f00, path=...,
rect=..., pregenerate=false) at
/mnt/data/Devel/GIT/2.x/core/libs/threadimageio/thumbnailcreator.cpp:245
#14 0xb67da599 in Digikam::ThumbnailCreator::load (this=0xa3a8f00, path=...) at
/mnt/data/Devel/GIT/2.x/core/libs/threadimageio/thumbnailcreator.cpp:196
#15 0xb67e8181 in Digikam::ThumbnailLoadingTask::execute (this=0xa733768) at
/mnt/data/Devel/GIT/2.x/core/libs/threadimageio/thumbnailtask.cpp:169
#16 0xb67c574a in Digikam::LoadSaveThread::run (this=0xa3841f8) at
/mnt/data/Devel/GIT/2.x/core/libs/threadimageio/loadsavethread.cpp:118
#17 0xb68024ca in Digikam::DynamicThread::DynamicThreadPriv::run
(this=0xa3a71a8) at
/mnt/data/Devel/GIT/2.x/core/libs/threads/dynamicthread.cpp:328
#18 0xb48fa9d6 in ?? () from /usr/lib/libQtCore.so.4
#19 0xb490555f in ?? () from /usr/lib/libQtCore.so.4
#20 0xb4892ae5 in start_thread () from /lib/i686/libpthread.so.0
#21 0xb466203e in clone () from /lib/i686/libc.so.6

Why ???

So, my only solution is to temporally disable OpenMP support with libpgf to be
able to run properly digiKam.

I recommend to improve better OpenMP support in libpgf. I will write some code
to be able to force compilation of libpgf without OpenMP, in case of OpenMP is
detected on target computer. I recommend to backport my patch to current
implementation of libpgf

Gilles Caulier

-- 
Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.