mirror of https://github.com/rust-lang/rust.git
21 lines
401 B
Rust
21 lines
401 B
Rust
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//! This test checks that opaque types get unsized instead of
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//! constraining their hidden type to a trait object.
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//@ revisions: next old
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//@[next] compile-flags: -Znext-solver
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//@check-pass
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trait Trait {}
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impl Trait for u32 {}
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fn hello() -> Box<impl Trait + ?Sized> {
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if true {
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let x = hello() as Box<u32>;
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let y: Box<dyn Send> = x;
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}
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Box::new(1u32)
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}
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fn main() {}
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