File: str-contains-slice-conceptually.rs

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rustc 1.89.0%2Bdfsg1-1
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#![feature(negative_impls)]
#![feature(auto_traits)]

auto trait AutoTrait {}

impl<T> !AutoTrait for [T] {}

fn needs_auto_trait<T: AutoTrait + ?Sized>() {}

fn main() {
  needs_auto_trait::<str>();
  //~^ ERROR the trait bound `[u8]: AutoTrait` is not satisfied in `str`
}