Bug#875627: reassing back to libauthen-captcha-perl

[gregor herrmann]

On Wed, 13 Sep 2017 08:52:37 +0200, Gianfranco Costamagna wrote:

> Now libpng better detects a bad png files, and this is not a bug of course,
> but rather a sign that the image should be fixed.
> 
> pngfix /usr/share/perl5/Authen/Captcha/images/background5.png
> IDAT OK  default 15 15 7197 7035 /usr/share/perl5/Authen/Captcha/images/background5.png
> HEAD ERR 00 libpng Success Success IDAT:_chunk_data_is_too_large /usr/share/perl5/Authen/Captcha/images/background5.png

Ok, thanks for investigating.
 
> I'm raising the severity to serious, because this seems to be a serious enough bug, even more because the package can't
> rebuild now (fails testsuite, e.g. in Ubuntu, while on Debian for some bug the error is not caught in dh_auto_test)

The library picks one of the images on random; if you repeat the test
on Debian, you'll see the failure as well.
 
> Interestingly enough, that file in Ubuntu installations is correct, probably because of a side effect
> of png optimizer, ran automatically in Ubuntu builders
> https://launchpadlibrarian.net/173920478/buildlog_ubuntu-utopic-i386.libauthen-captcha-perl_1.024-1_UPLOADING.txt.gz

Interesting!
 

Cheers,
gregor

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