| // RUN: %target-swift-emit-sil %s -o /dev/null -verify |
| |
| //===--- Function declaration with uninhabited parameter type |
| |
| func foo(baz: Never) -> Int { // expected-note {{'baz' is uninhabited, so this function body can never be executed}} |
| print("I can't be called!") // expected-warning{{will never be executed}} |
| return 0 |
| } |
| |
| func bar(baz: Never) -> Int {} // ok |
| |
| // SR-13432 |
| func map<T>(_ block: (Never) -> T) {} |
| map { arg in // expected-note {{'arg' is uninhabited, so this function body can never be executed}} |
| 5 // expected-warning {{will never be executed}} |
| } |
| |
| map { arg in // expected-note {{'arg' is uninhabited, so this function body can never be executed}} |
| return 5 // expected-warning {{will never be executed}} |
| } |
| |
| // We used to crash when emitting the closure below. |
| enum E { |
| static func f(_: E) {} |
| } |
| |
| let _: (E.Type) -> (E) -> () = { s in { e in s.f(e) } } |
| // expected-warning@-1 {{will never be executed}} |
| // expected-note@-2 {{'e' is uninhabited, so this function body can never be executed}} |
