And it doesn't work for `const fn`? The following code doesn't work:
```rust
// In library:
#[linkage = "weak"]
#[no_mangle]
const fn get_size() -> usize {
    32
}
pub(crate) const EVENT_CHANNEL_SIZE: usize = get_size();

// In User Space
#[no_mangle]
const fn get_size() -> usize {
    16
}
```