[Bug c++/11376] New: [3.3/3.4 regression] mozilla-1.4 miscompiled

["sirl at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11376

           Summary: [3.3/3.4 regression] mozilla-1.4 miscompiled
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sirl at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,kevin dot hendricks at
                    sympatico dot ca
 GCC build triplet: powerpc-unknown-linux-gnu
  GCC host triplet: powerpc-unknown-linux-gnu
GCC target triplet: powerpc-unknown-linux-gnu

As described in <http://gcc.gnu.org/ml/gcc-bugs/2003-06/threads.html#02040>,
gcc-3.3/3.4 miscompiles mozilla-1.4 leading to a segfault at startup.
Due to the kind help of Kevin Hendricks there is now a simplified testcase that
shows the bug if compiled with -O2 -fno-exceptions.
It is not clear yet if the code itself is aliasing safe.