Function IOCFUnserializeWithSize 

pub unsafe extern "C-unwind" fn IOCFUnserializeWithSize(
    buffer: *const c_char,
    buffer_size: usize,
    allocator: Option<&CFAllocator>,
    options: CFOptionFlags,
    error_string: *mut *const CFString,
) -> Option<CFRetained<CFType>>

Safety

• buffer must be a valid pointer.
• allocator might not allow None.
• error_string must be a valid pointer.