rust/tests/ui/marker_trait_attr/conflicting-send-impls-for-marker-trait-106755.rs
2025-07-24 17:01:44 -04:00

25 lines
667 B
Rust

//@ compile-flags:-Ztranslate-lang=en_US
#![feature(negative_impls)]
#![feature(marker_trait_attr)]
#[marker]
trait MyTrait {}
struct TestType<T>(::std::marker::PhantomData<T>);
unsafe impl<T: MyTrait + 'static> Send for TestType<T> {}
impl<T: MyTrait> !Send for TestType<T> {}
//~^ ERROR found both positive and negative implementation
//~| ERROR `!Send` impl requires `T: MyTrait` but the struct it is implemented for does not
unsafe impl<T: 'static> Send for TestType<T> {} //~ ERROR conflicting implementations
impl !Send for TestType<i32> {}
//~^ ERROR `!Send` impls cannot be specialized
fn main() {}
// https://github.com/rust-lang/rust/issues/106755