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.
8 lines
177 B
Rust
8 lines
177 B
Rust
#![feature(negative_impls)]
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fn main() {
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struct Foo;
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impl !Sync for Foo {}
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unsafe impl Send for &'static Foo { } //~ ERROR cross-crate traits with a default impl
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}
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