[Bug c/11334] New: some warnings missed if optimization not on

["lduncan at pillardata dot com" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11334

           Summary: some warnings missed if optimization not on
           Product: gcc
           Version: 3.2.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: lduncan at pillardata dot com
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: SPARC, Solaris 5.9
GCC target triplet: same

The following function gets a warning if and only if the '-O" (optimization) optin is supplied to gcc

    void *some_funct(int a)
    {
        void *vaddr;
        return (vaddr + n);
    }