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From: Paul Eggert <eggert@cs.ucla.edu>
Newsgroups: gmane.emacs.bugs
Subject: bug#22442: 25.0.50; --with-cairo does not display PNG on GNU/Linux
Date: Sat, 23 Jan 2016 01:12:03 -0800
Organization: UCLA Computer Science Department
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I installed a patch which should make Bug#22442 easier to reproduce:

./configure --with-cairo --enable-checking
make
wget https://upload.wikimedia.org/wikipedia/commons/f/f5/All_palaeotemps.png
src/emacs -Q All_palaeotemps.png

This should make Emacs dump core.

I'll CC: this to Jan D. as he's expert in this area.