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32 lines
573 B
Rust
32 lines
573 B
Rust
// run-pass
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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pub trait BlockCipher {
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const BLOCK_SIZE: usize;
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}
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struct FooCipher;
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impl BlockCipher for FooCipher {
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const BLOCK_SIZE: usize = 64;
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}
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struct BarCipher;
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impl BlockCipher for BarCipher {
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const BLOCK_SIZE: usize = 32;
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}
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pub struct Block<C>(#[allow(unused_tuple_struct_fields)] C);
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pub fn test<C: BlockCipher, const M: usize>()
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where
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[u8; M - C::BLOCK_SIZE]: Sized,
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{
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let _ = [0; M - C::BLOCK_SIZE];
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}
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fn main() {
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test::<FooCipher, 128>();
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test::<BarCipher, 64>();
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}
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