21 lines
297 B
Rust
21 lines
297 B
Rust
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// check-pass
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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pub trait IsTrue<const T: bool> {}
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impl IsTrue<true> for () {}
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pub trait IsZST {}
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impl<T> IsZST for T
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where
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(): IsTrue<{ std::mem::size_of::<T>() == 0 }>
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{}
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fn _func() -> impl IsZST {
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|| {}
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}
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fn main() {}
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