src/test/ui/const-generics/conservative_is_privately_uninhabited_uses_correct_param_env-1.rs

   1 // run-pass
   2 #![feature(generic_const_exprs)]
   3 #![allow(incomplete_features)]
   4
   5 // This tests that the `conservative_is_privately_uninhabited` fn doesn't cause
   6 // ICEs by trying to evaluate `T::ASSOC` with an incorrect `ParamEnv`.
   7
   8 trait Foo {
   9     const ASSOC: usize = 1;
  10 }
  11
  12 struct Iced<T: Foo>(T, [(); T::ASSOC])
  13 where
  14     [(); T::ASSOC]: ;
  15
  16 impl Foo for u32 {}
  17
  18 fn foo<T: Foo>()
  19 where
  20     [(); T::ASSOC]: ,
  21 {
  22     let _iced: Iced<T> = return;
  23 }
  24
  25 fn main() {
  26     foo::<u32>();
  27 }