mirror of https://github.com/rust-lang/rust.git
14 lines
414 B
Rust
14 lines
414 B
Rust
// Test that cross-borrowing (implicitly converting from `Box<T>` to `&T`) is
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// forbidden when `T` is a trait.
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struct Foo;
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trait Trait { fn foo(&self) {} }
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impl Trait for Foo {}
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pub fn main() {
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let x: Box<dyn Trait> = Box::new(Foo);
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let _y: &dyn Trait = x; //~ ERROR E0308
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//~| expected reference `&dyn Trait`
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//~| found struct `Box<dyn Trait>`
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}
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