http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49498
--- Comment #19 from bin.cheng <amker.cheng at gmail dot com> 2012-11-21 13:24:02 UTC --- (In reply to comment #18) > *** Bug 55424 has been marked as a duplicate of this bug. *** Just for the record. If the analysis I gave in Comment #17 is right, this PR reveals another bug in tree-ssa-uninit.c, apart from the limitation of MAX_NUM_CHAINS, while PR55424 is only about MAX_NUM_CHAINS.