src/test/ui/const-generics/dont-evaluate-array-len-on-err-1.rs

   1 #![feature(const_generics, const_evaluatable_checked)]
   2 #![allow(incomplete_features)]
   3
   4 // This tests that during error handling for the "trait not implemented" error
   5 // we dont try to evaluate std::mem::size_of::<Self::Assoc> causing an ICE
   6
   7 struct Adt;
   8
   9 trait Foo {
  10     type Assoc;
  11     fn foo()
  12     where
  13         [Adt; std::mem::size_of::<Self::Assoc>()]: ,
  14     {
  15         <[Adt; std::mem::size_of::<Self::Assoc>()] as Foo>::bar()
  16         //~^ Error: the trait bound
  17     }
  18
  19     fn bar() {}
  20 }
  21
  22 fn main() {}