http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55970
--- Comment #3 from Yuri Rumyantsev <ysrumyan at gmail dot com> 2013-01-14 15:15:52 UTC --- I pointed out that this code is not C standard compliant but it occurred in customer application that should be ported to x86 platform. This bug is not issued by gcc and very hard detected. Customer has more then 2000 such patterns in its application and he is not sure that all such patterns were found. So I still assume that we should fix it for x86 platform. Note also that icc does not have such issue.