| // RUN: %target-swift-frontend %s -o /dev/null -verify -emit-sil | |
| struct Box<T> { | |
| var value: T | |
| } | |
| class Klass {} | |
| func myPrint(_ x: inout Box<Klass>) -> () { print(x) } | |
| func testError() -> (() -> ()) { | |
| @_semantics("boxtostack.mustbeonstack") | |
| var x = Box<Klass>(value: Klass()) // expected-error {{Can not promote value from heap to stack due to value escaping}} | |
| let result = { // expected-note {{value escapes here}} | |
| myPrint(&x) | |
| } | |
| return result | |
| } | |
| func main() { | |
| testError()() | |
| } | |
| main() |