mirror of https://github.com/rust-lang/rust
36 lines
671 B
Rust
36 lines
671 B
Rust
//@ run-pass
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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struct Generic<const K: u64>;
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struct ConstU64<const K: u64>;
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impl<const K: u64> Generic<K>
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where
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ConstU64<{ K - 1 }>: ,
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{
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fn foo(self) -> u64 {
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K
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}
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}
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impl<const K: u64> Generic<K>
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where
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ConstU64<{ K - 1 }>: ,
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ConstU64<{ K + 1 }>: ,
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ConstU64<{ K + 1 - 1 }>: ,
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{
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fn bar(self) -> u64 {
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let x: Generic<{ K + 1 }> = Generic;
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x.foo()
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}
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}
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fn main() {
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assert_eq!((Generic::<10>).bar(), 11);
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}
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// Test that the ``ConstU64<{ K + 1 - 1}>`` bound on ``bar``'s impl block satisfies the
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// ``ConstU64<{K - 1}>`` bound on ``foo``'s impl block
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