[Bug bootstrap/50148] New: GCC fails to bootstrap with -O3 due to "may be used uninitialized" errors

["d.g.gorbachev at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50148

             Bug #: 50148
           Summary: GCC fails to bootstrap with -O3 due to "may be used
                    uninitialized" errors
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: d.g.gorbachev@gmail.com
              Host: i686-pc-linux-gnu
            Target: i686-pc-linux-gnu
             Build: i686-pc-linux-gnu


Created attachment 25070
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25070
Patch for c-parser.c

Error message:

../../gcc-4.7/gcc/c-parser.c: In function 'c_expr
c_parser_postfix_expression_after_primary(c_parser*, location_t, c_expr)':
../../gcc-4.7/gcc/c-parser.c:6664:16: error: 'origtypes' may be used
uninitialized in this function [-Werror=maybe-uninitialized]