581420 – media-libs/libpng clutters stdout and ~/.xsession-errors with useless messages

Bug 581420 - media-libs/libpng clutters stdout and ~/.xsession-errors with useless messages

Summary: media-libs/libpng clutters stdout and ~/.xsession-errors with useless messages

Status:	RESOLVED WONTFIX

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	[OLD] Core system (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo's Team for Core System packages

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Depends on:
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Reported:	2016-04-28 07:38 UTC by om3i
Modified:	2016-05-14 07:55 UTC (History)
CC List:	0 users

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Runtime testing required:	---

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Description om3i 2016-04-28 07:38:39 UTC

media-libs/libpng clutters logs with useless messages such as:
>libpng warning: cHRM: inconsistent chromaticities
>libpng warning: iCCP: known incorrect sRGB profile
>libpng warning: iCCP: profile 'icc': 'RGB ': RGB color space not permitted on grayscale PNG

Because incorrect images are for example downloaded by browser
from internet there is no way to fix these images.

Workaround: add -UPNG_WARNINGS_SUPPORTED to $CFLAGS.

Similar bugreports:
https://bugs.gentoo.org/show_bug.cgi?id=467936
https://bugs.gentoo.org/show_bug.cgi?id=541090

Comment 1 om3i 2016-04-28 07:39:59 UTC

Actually it seems -UPNG_WARNINGS_SUPPORTED doesn't work.

Comment 2 Jeroen Roovers (RETIRED) gentoo-dev

2016-04-29 08:33:14 UTC

/usr/lib/portage/python3.4/install-qa-check.d/60pngfix is causing these warnings. I'm pretty sure it's a feature.

Comment 3 om3i 2016-04-29 09:06:38 UTC

I'm not talking about build logs, i mean ~/.xsession-errors and stdout

Comment 4 SpanKY gentoo-dev

2016-05-13 18:22:20 UTC

meh, fix the broken images and the warnings go away.  afaik, we aren't doing anything special -- upstream libpng has decided to pull the ecosystem forward, and i don't think we should hold it back.