32 lines
627 B
Rust
32 lines
627 B
Rust
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//@ known-bug: #105238
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#![allow(incomplete_features)]
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#![feature(generic_const_exprs)]
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trait Ret {
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type R;
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}
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struct Cond<const PRED: bool, U, V>(std::marker::PhantomData<U>, std::marker::PhantomData<V>);
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impl<U, V> Ret for Cond<true, U, V> {
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type R = U;
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}
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impl<U, V> Ret for Cond<false, U, V> {
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type R = V;
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}
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struct RobinHashTable<const MAX_LENGTH: usize, CellIdx = Cond<{ MAX_LENGTH < 65535 }, u16, u32>>
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where
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CellIdx: Ret,
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{
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_idx: CellIdx::R,
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}
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fn main() {
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use std::mem::size_of;
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println!("{}", size_of::<RobinHashTable<1024>>());
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println!("{}", size_of::<RobinHashTable<65536>>());
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}
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