21 lines
548 B
Rust
21 lines
548 B
Rust
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// Demonstrates and records a theoretical regressions / breaking changes caused by the
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// introduction of const trait bounds.
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// Setting the edition to 2018 since we don't regress `demo! { dyn const }` in Rust <2018.
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// edition:2018
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macro_rules! demo {
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($ty:ty) => { compile_error!("ty"); };
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(impl $c:ident) => {};
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(dyn $c:ident) => {};
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}
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demo! { impl const }
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//~^ ERROR expected identifier, found `<eof>`
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demo! { dyn const }
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//~^ ERROR const trait impls are experimental
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//~| ERROR expected identifier, found `<eof>`
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fn main() {}
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