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21 lines
456 B
Rust
21 lines
456 B
Rust
pub trait Foo {
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fn foo(self) -> String;
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}
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struct A;
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impl Foo for A {
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fn foo(self) -> String {
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format!("hello")
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}
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}
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fn main() {
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let x = *(Box::new(A) as Box<dyn Foo>); //~ERROR the size for values of type `dyn Foo` cannot be known at compilation time
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assert_eq!(x.foo(), format!("hello"));
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// I'm not sure whether we want this to work
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let x = Box::new(A) as Box<dyn Foo>;
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assert_eq!(x.foo(), format!("hello"));
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}
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