22 lines
497 B
Rust
22 lines
497 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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//@[old] 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> {
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if true {
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let x = hello();
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//[next]~^ ERROR: type mismatch resolving `impl Trait <: dyn Trait`
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let y: Box<dyn Trait> = x;
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}
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Box::new(1u32) //[next]~ ERROR: mismatched types
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}
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fn main() {}
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