Comment # 10 on bug 71138 from Benjamin Bellec

Yes I confirm this is now fixed.
I can even add the fix was:

commit: e9822f77a9cc024f528d30382fd5ad21c73a173b
title: glsl: Skip making a temporary for assignments when we don't need one.
author: Eric Anholt <eric@anholt.net>
date: 2014-04-08 07:59:47 (GMT)