mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-18 11:34:11 +00:00
23 lines
535 B
Rust
23 lines
535 B
Rust
// aux-build:coherence_copy_like_lib.rs
|
|
|
|
// Test that we are able to introduce a negative constraint that
|
|
// `MyType: !MyTrait` along with other "fundamental" wrappers.
|
|
|
|
extern crate coherence_copy_like_lib as lib;
|
|
|
|
struct MyType { x: i32 }
|
|
|
|
trait MyTrait { fn foo() {} }
|
|
impl<T: lib::MyCopy> MyTrait for T { }
|
|
|
|
// `MyStruct` is not declared fundamental, therefore this would
|
|
// require that
|
|
//
|
|
// MyStruct<MyType>: !MyTrait
|
|
//
|
|
// which we cannot approve.
|
|
impl MyTrait for lib::MyStruct<MyType> { }
|
|
//~^ ERROR E0119
|
|
|
|
fn main() { }
|