pub unsafe extern "C" fn ASN1_dup(
i2d: Option<unsafe extern "C" fn(_: *const c_void, _: *mut *mut u8) -> i32>,
d2i: Option<unsafe extern "C" fn(_: *mut *mut c_void, _: *mut *const u8, _: i64) -> *mut c_void>,
x: *const c_void,
) -> *mut c_void