rust/tests/ui/nll/issue-54943-3.rs
许杰友 Jieyou Xu (Joe) edafbaffb2
Adjust UI tests for unit_bindings
- Either explicitly annotate `let x: () = expr;` where `x` has unit
  type, or remove the unit binding to leave only `expr;` instead.
- Fix disjoint-capture-in-same-closure test
2023-06-12 20:24:48 +08:00

20 lines
568 B
Rust

// check-pass
// FIXME(#54943) This test targets the scenario where proving the WF requirements requires
// knowing the value of the `_` type present in the user type annotation - unfortunately, figuring
// out the value of that `_` requires type-checking the surrounding code, but that code is dead,
// so our NLL region checker doesn't have access to it. This test should actually fail to compile.
#![allow(warnings)]
use std::fmt::Debug;
fn foo<T: 'static + Debug>(_: T) { }
fn bar<'a>() {
return;
foo::<Vec<_>>(Vec::<&'a u32>::new());
}
fn main() {}