segfault in wgenopts.c

[Benjamin Kosnik]

> build is i686-pc-gnu-linux
> with --enable-c-mbchar=yes --enable-cstdio=libio --enable-long-long --enable-sha
> red --enable-threads.

first of all, this configuration will not work, period. 

Please re-read my wchar_t enabling mail carefully: you're forgetting to 
disable the v3 ABI. A correct configure command might look like this:

--disable-new-gxx-abi --enable-cstdio=libio --enable-long-long 
--enable-threads=posix

-benjamin