http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48966
--- Comment #1 from Geir Johansen <geir at cray dot com> 2011-05-11 15:24:05 UTC --- (In reply to comment #0) > The following test gets the wrong answer for optimization level -O2 (and -O3) > for GCC 4.5.3. The correct answer occurs when -O1 is used. The problem does > occur in GCC 4.6.0: The problem does NOT occur in GCC 4.6.0