rust/src/test/ui/error-codes/E0198.rs
Niko Matsakis fda3378e3f introduce negative_impls feature gate and document
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.
2020-03-26 06:52:55 -04:00

8 lines
103 B
Rust

#![feature(negative_impls)]
struct Foo;
unsafe impl !Send for Foo { } //~ ERROR E0198
fn main() {
}