exec_opcodes_sys test failes when compiled for 32 bit on a 64 bit linux OS on AMD Phenom II
https://bugzilla.gnome.org/show_bug.cgi?id=772398 is still a problem.
Downstream report suggests: "This only happens on an AMD Phenom II based PC. My work PC with a SandyBridge Core i7 is unaffected"
I can reproduce it as well, and I too happen to have a Phenom II.