0000002: truncated image decoding

ID	Project	Category	View Status	Date Submitted	Last Update

0000002	PNG	Image Decoding	public	2020-05-10 08:44	2020-05-11 08:30

Reporter	twiard	Assigned To	oliver
Priority	normal	Severity	major	Reproducibility	always
Status	resolved	Resolution	fixed
Fixed in Version	45.23

Summary	0000002: truncated image decoding
Description	bonjour when I decode the .PNG attached, I see only a part of the picture as seen on the screenshot attached thank you
Tags	No tags attached.

twiard 2020-05-10 08:46 reporter	20200510_103805.jpg (1,767,405 bytes)

twiard 2020-05-10 08:47 reporter	amigalogocheck.png (57,137 bytes) amigalogocheck.png (57,137 bytes)

oliver 2020-05-10 13:05 administrator ~0000002	Thanks for the report - I've traced this back and the problem first started occurring in WarpPNG 45.18 (45.17 and earlier were ok). There is a stream decode error appearing in zlib, but I have yet to determine if the problem is located in zlib or libpng - unfortunately, both were updated in WarpPNG 45.18. I'll hopefully find a fix soon.

oliver 2020-05-11 08:30 administrator ~0000003	This has been fixed for the next release. Technically, there is an error in that PNG file (zlib window size has been set to the incorrect size) which can be fixed with pngfix. But, I've reverted WarpPNG to the old libpng 1.5.x behaviour so it will be able to read all images with this error. IBrowse inherited this issue too and that is fixed too also, for the next release.

Date Modified	Username	Field	Change
2020-05-10 08:44	twiard	New Issue
2020-05-10 08:46	twiard	File Added: 20200510_103805.jpg
2020-05-10 08:47	twiard	File Added: amigalogocheck.png
2020-05-10 13:05	oliver	Assigned To	=> oliver
2020-05-10 13:05	oliver	Status	new => confirmed
2020-05-10 13:05	oliver	Note Added: 0000002
2020-05-11 08:30	oliver	Status	confirmed => resolved
2020-05-11 08:30	oliver	Resolution	open => fixed
2020-05-11 08:30	oliver	Fixed in Version	=> 45.23
2020-05-11 08:30	oliver	Note Added: 0000003