[Digikam-devel] [CRASH] writing a png crashs digikam-SVN

[Thorsten Schnebeck]

On Friday, December 15, 2006 07:48:03 AM Gilles Caulier wrote:
> Not reproductible here. I use every day PNG file format to save my photo.
> No crash here...
>
> Your report sound like a problem with your HDD free space/ or something is
> broken in your KDE installation ?
>
> > kio (KIOJob): stat file:///home/schnebeck/EOS/einTest/IMG_4876.png
> > kio (KIOJob): error 11 /home/schnebeck/EOS/einTest/IMG_4876.png
>
> Why KIOJob return an error just before than digiKam start the PNG stuff ?
>
> Gilles
Hi Gilles,

no, I loaded the same image into KolourPaint that nearly have the same "save 
as"-dialog and there it no problem to save to png. As a non-KDE program GIMP 
has also no problems.
There is 12 GB left on partition, should be enough ;-)
Although no room on a device should never crash an already running 
application.

So I tried to recompile some of the involved packages to get a BT and here it 
is:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1250223200 (LWP 12511)]
0xb633a819 in adler32 () from /lib/libz.so.1
(gdb) bt
#0  0xb633a819 in adler32 () from /lib/libz.so.1
#1  0xb633d3c3 in deflateCopy () from /lib/libz.so.1
#2  0xb633e4fc in deflateParams () from /lib/libz.so.1
#3  0xb633d6c7 in deflate () from /lib/libz.so.1
#4  0xb64ab391 in png_save_uint_16 () from /usr/lib/libpng12.so.0
#5  0xb64ac498 in png_write_chunk_start () from /usr/lib/libpng12.so.0
#6  0xb64b2f5a in png_write_info_before_PLTE () from /usr/lib/libpng12.so.0
#7  0xb64b2fbc in png_write_info () from /usr/lib/libpng12.so.0
#8  0xb7ea86d3 in Digikam::PNGLoader::save (this=0xb57b136c, 
filePath=@0x8519bc8,
    observer=0x8519bc0) at pngloader.cpp:691
#9  0xb7ebea99 in Digikam::DImg::save (this=0x8519bc4, filePath=@0x8519bc8, 
format=@0x8519bcc,
    observer=0x8519bc0) at dimg.cpp:397
#10 0xb7e3c036 in Digikam::SavingTask::execute (this=0x8519bb8) at 
loadsavetask.cpp:395
#11 0xb7e399fd in Digikam::LoadSaveThread::run (this=0x84cd550) at 
loadsavethread.cpp:172
#12 0xb6946853 in QThreadInstance::start () from /usr/qt/3/lib/libqt-mt.so.3
#13 0xb6461294 in start_thread () from /lib/libpthread.so.0
#14 0xb620597e in clone () from /lib/libc.so.6  

(This is another computer, here is libpng12. On the other system it was 
libpng13)

Strange that a save command enters a loader code. Maybe that libpng does not 
want to write a illegal png format to disk?
To make it clear: there is no problem to write to jpg, tiff, bmp etc. When 
using jpeg2000 I get an error message but png results in a longer freeze and 
then a crash.

But its also strange that no-one else seems to trigger such a generic problem. 

Bye

  Thorsten