http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59648
--- Comment #2 from David Kredba <nheghathivhistha at gmail dot com> --- I am sorry but Xorg guys are saying this is gcc problem: https://bugs.freedesktop.org/show_bug.cgi?id=71127 -O2 compilation is used wide in distributions so in my opinion this issue needs resolution on one of connected sides. Could you kindly please re-open this or say what is wrong with Xorg-server sources? Thank you in advance.
