[Bug target/15084] New: -O/-O2 generate wrong code on structure modification

[hjl at lucon dot org]

On x86_64, gcc may generate wrong code on structure modification with -O and -O2.

-- 
           Summary: -O/-O2 generate wrong code on structure modification
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl at lucon dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: x86_64-pc-linux-gnu
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15084