>>>>> "W" == William Djaja Tjokroaminata <billtj / y.glue.umd.edu> writes:

W> Yes, in my C extension Init_xxx function, I have a rb_require right after
W> the variable declarations and it works.  Then, I have some other C codes
W> such as class definitions.  When I have another rb_require, it resulted in
W> segmentation fault.

 You have a bug. Post your source or nobody will be able to help you

Guy Decoux