BIO_print Error?

[유일선]

I'm studing and testing OpenSSL. In Win2k Professional, I compiled and runned 'genrsa' programs. But BIO_XXX routines make errors. I don't know what is the problem : improper compile option or missing initializing routine or win2k bug?   Please help me.   ///////////// Source /////////////   {  BIO *bio_err=NULL;    if ((bio_err=BIO_new(BIO_s_file())) != NULL)   BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); -----------    BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n");  => error happens!   }