Bug 406979

Summary:	Specific PNG crashes Digikam
Product:	[Applications] digikam	Reporter:	Sebas <djsebas>
Component:	Database-Thumbs	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED FIXED
Severity:	crash	CC:	caulier.gilles, metzpinguin
Priority:	NOR
Version:	6.1.0
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed In:	7.1.0
Sentry Crash Report:

Description Sebas 2019-04-27 17:40:59 UTC

Digikam 6.0 and 6.1.

A specific PNG file crashes the whole application. I think it happens when Digikam tries to generate a thumbnail. I moved the file out of the collection and now it seems fine. Although, knowing Digikam's stability for me...it is just waiting for the next crash and database corruption. *sigh*

I can provide the file to a developer. Just asking you to delete it afterwards because there is a person in the picture (not me). Let me know how to get it to you.

Comment 1 caulier.gilles 2019-04-27 18:24:09 UTC

Hi just share PNG samples through the cloud.

Best

Gilles Caulier

Comment 2 Sebas 2019-04-27 18:35:56 UTC

I can mail it to you. Don't wish to put this one up in public.

Comment 3 Maik Qualmann 2019-04-27 23:29:18 UTC

Please send me a PNG file.

Maik

Comment 4 Sebas 2019-04-28 07:34:38 UTC

Done.

Comment 5 Maik Qualmann 2019-04-28 10:30:01 UTC

The PNG file is clearly broken. However, digiKam does not crash here under Linux, but like other programs it can not display the image. Gimp loads half a image.

libpng error: IDAT: CRC error
digikam.dimg.png: Internal libPNG error during reading file. Process aborted!
digikam.dimg: Try to load image with ImageMagick codecs
digikam.dimg: ImageMagick exception [ "/daten/Bilder/Zugang/aa/DSC_3784_RT1.png" ] digikam: IDAT: CRC error `/daten/Bilder/Zugang/aa/DSC_3784_RT1.png' @ error/png.c/MagickPNGErrorHandler/1714

Maik

Comment 6 caulier.gilles 2019-04-28 11:17:34 UTC

Other question is : is Exiv2 can parse this broken files without to crash host application ?

Gilles

Comment 7 Maik Qualmann 2019-04-28 12:14:38 UTC

I think the reason it crashes on Windows is that "catch" does not work under MinGW. Let's see if I can debug it with the PNG file.

Maik

Comment 8 Sebas 2019-04-28 14:03:42 UTC

Hmm weird. Image displays well here in Windows Photo Viewer and is editable in Paint.NET. Broken in IrfanView.

So this must be corruption...which is worrying...

Comment 9 Maik Qualmann 2019-06-28 19:52:22 UTC

*** This bug has been marked as a duplicate of bug 408592 ***

Comment 10 Sebas 2020-08-01 19:37:50 UTC

No crash in 7.0.0.

Comment 11 caulier.gilles 2020-08-01 20:15:51 UTC

Thanks for the feedback