| // Ensure that OIBIT checks `T` when it encounters a `PhantomData<T>` field, instead of checking |
| // the `PhantomData<T>` type itself (which almost always implements an auto trait) |
| |
| #![feature(optin_builtin_traits)] |
| |
| use std::marker::{PhantomData}; |
| |
| unsafe auto trait Zen {} |
| |
| unsafe impl<'a, T: 'a> Zen for &'a T where T: Sync {} |
| |
| struct Guard<'a, T: 'a> { |
| _marker: PhantomData<&'a T>, |
| } |
| |
| struct Nested<T>(T); |
| |
| fn is_zen<T: Zen>(_: T) {} |
| |
| fn not_sync<T>(x: Guard<T>) { |
| is_zen(x) |
| //~^ ERROR `T` cannot be shared between threads safely [E0277] |
| } |
| |
| fn nested_not_sync<T>(x: Nested<Guard<T>>) { |
| is_zen(x) |
| //~^ ERROR `T` cannot be shared between threads safely [E0277] |
| } |
| |
| fn main() {} |
