fda3378e3f
They used to be covered by `optin_builtin_traits` but negative impls are now applicable to all traits, not just auto traits. This also adds docs in the unstable book for the current state of auto traits.
13 lines
214 B
Rust
13 lines
214 B
Rust
#![feature(negative_impls)]
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use std::marker::Sync;
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struct Foo;
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impl !Sync for Foo {}
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static FOO: usize = 3;
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static BAR: Foo = Foo;
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//~^ ERROR: `Foo` cannot be shared between threads safely [E0277]
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fn main() {}
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