I installed a base KDE4 system on my local machine, in order to reproduce the issue (I compiled manually qt-core, qt-declarative and qt-gui with the old CFLAGS), I was able to successfully reproduce this issue.
I then tried to selectively disable GRAPHITE and ftree-vectorize to fix this issue, it seems that the GRAPHITE flags are to blame for this, I am not experiencing this issue anymore with -ftree-vectorize on. I guess this issue is related to some bug with the graphite framework, thus I suggest to keep it enabled only for -O3 packages. I am going to perform some more research to estabilish if it is an application related bug (for example some bad cast, non-volatile variables when volatile should be used, or some race condition) or some bad graphite optimizations. Il giorno sab, 10/03/2012 alle 23.08 +0100, Fabio Erculiani ha scritto: > So we need to reconsider these graphite and -ftree-vectorize CFLAGS now. > -- Lorenzo Cogotti
