37 lines
703 B
Rust
37 lines
703 B
Rust
#![allow(bare_trait_objects)]
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trait DynIncompatible {
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fn foo() -> Self;
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}
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struct A;
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struct B;
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impl DynIncompatible for A {
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fn foo() -> Self {
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A
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}
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}
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impl DynIncompatible for B {
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fn foo() -> Self {
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B
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}
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}
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fn car() -> dyn DynIncompatible { //~ ERROR the trait `DynIncompatible` is not dyn compatible
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//~^ ERROR return type cannot be a trait object without pointer indirection
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if true {
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return A;
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}
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B
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}
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fn cat() -> Box<dyn DynIncompatible> { //~ ERROR the trait `DynIncompatible` is not dyn compatible
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if true {
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return Box::new(A); //~ ERROR is not dyn compatible
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}
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Box::new(B) //~ ERROR is not dyn compatible
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}
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fn main() {}
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