32 lines
593 B
Rust
32 lines
593 B
Rust
//@ build-pass (FIXME(62277): could be check-pass?)
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#![deny(unused)]
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pub trait Trt {}
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pub struct Str {}
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impl Trt for Str {}
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macro_rules! check_impl {
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($struct:ident, $trait:ident) => {
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const _ : () = {
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use std::marker::PhantomData;
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struct ImplementsTrait<T: $trait>(PhantomData<T>);
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let _ = ImplementsTrait::<$struct>(PhantomData);
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()
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};
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}
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}
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const _ : () = ();
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const _ : i32 = 42;
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const _ : Str = Str{};
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check_impl!(Str, Trt);
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check_impl!(Str, Trt);
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fn main() {
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check_impl!(Str, Trt);
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check_impl!(Str, Trt);
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}
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