| // Checks that an unreachable code warning is emitted when an expression is |
| // preceded by an expression with an uninhabited type. Previously, the |
| // variable liveness analysis was "smarter" than the reachability analysis |
| // in this regard, which led to confusing "unused variable" warnings |
| // without an accompanying explanatory "unreachable expression" warning. |
| |
| //@ check-pass |
| |
| #![warn(unused_variables,unreachable_code)] |
| |
| enum Foo {} |
| fn f() -> Foo {todo!()} |
| |
| fn main() { |
| let x = f(); |
| //~^ WARNING: unused variable: `x` |
| let _ = x; |
| //~^ WARNING: unreachable expression |
| } |
