src/test/ui/nll/issue-54943-3.rs

   1 // check-pass
   2 // FIXME(#54943) This test targets the scenario where proving the WF requirements requires
   3 // knowing the value of the `_` type present in the user type annotation - unfortunately, figuring
   4 // out the value of that `_` requires type-checking the surrounding code, but that code is dead,
   5 // so our NLL region checker doesn't have access to it. This test should actually fail to compile.
   6
   7 #![allow(warnings)]
   8
   9 use std::fmt::Debug;
  10
  11 fn foo<T: 'static + Debug>(_: T) { }
  12
  13 fn bar<'a>() {
  14     return;
  15
  16     let _x = foo::<Vec<_>>(Vec::<&'a u32>::new());
  17 }
  18
  19 fn main() {}