tests/ui/trivial-bounds/trivial-bounds-inconsistent-sized.rs

   1 // run-pass
   2 // Check tautalogically false `Sized` bounds
   3 #![feature(trivial_bounds)]
   4 #![allow(unused)]
   5
   6 trait A {}
   7
   8 impl A for i32 {}
   9
  10 struct T<X: ?Sized> {
  11     x: X,
  12 }
  13
  14 struct S(str, str) where str: Sized;
  15 //~^ WARNING Sized does not depend on any type or lifetime
  16
  17 fn unsized_local() where for<'a> T<dyn A + 'a>: Sized {
  18     //~^ WARNING Sized does not depend on any type or lifetime
  19     let x: T<dyn A> = *(Box::new(T { x: 1 }) as Box<T<dyn A>>);
  20 }
  21
  22 fn return_str() -> str where str: Sized {
  23     //~^ WARNING Sized does not depend on any type or lifetime
  24     *"Sized".to_string().into_boxed_str()
  25 }
  26
  27 fn main() {}