mirror of https://github.com/rust-lang/rust
28 lines
441 B
Rust
28 lines
441 B
Rust
//@ build-fail
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trait Foo {
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const AMT: usize;
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}
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enum Bar<A, B> {
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First(A),
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Second(B),
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}
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impl<A: Foo, B: Foo> Foo for Bar<A, B> {
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const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize]; //~ERROR evaluation of `<Bar<u16, u8> as Foo>::AMT` failed
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}
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impl Foo for u8 {
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const AMT: usize = 1;
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}
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impl Foo for u16 {
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const AMT: usize = 2;
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}
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fn main() {
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println!("{}", <Bar<u16, u8> as Foo>::AMT);
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//~^ constant
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}
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