Function gnunet_sys::gcry_sexp_create

pub unsafe extern "C" fn gcry_sexp_create(
    retsexp: *mut gcry_sexp_t, 
    buffer: *mut c_void, 
    length: usize, 
    autodetect: c_int, 
    freefnc: Option<unsafe extern "C" fn(arg1: *mut c_void)>
) -> gcry_error_t