bash 4.0 segment fault

[Lookey Lam]

Hello:
       I am now using bash source code 4.0 to compile a binary with
the configure option as following:
       --enable-prompt-string-decoding --enable-progcomp
--enable-help-builtin --enable-history --with-bash-malloc=no

       every thing goes smoothy but when I type tab key after i have
type cd or any other command. The bash print "segment fault" and exit.

       I am using 4.2.4 on ubuntu 9.04. kernel is 2.6.30.

      While i compile with --enable-link-static, gcc stop on finding
xf_xfree always.

      Thansk

lookey