417_72ki

@swift-main -strict-concurrency=complete

struct S: Sendable { init() {} func foo() {} } @main class Runner { static func main() async throws { var a = S() Task.detached { // (1) a.foo() } // (2) a = S() a.foo() } }

exit status: 1 with

<stdin>:7:1: error: 'main' attribute cannot be used in a module that contains top-level code 1 | struct S: Sendable { | |- note: top-level code defined in this source file | `- note: pass '-parse-as-library' to compiler invocation if this is intentional 2 | init() {} 3 | : 5 | } 6 | 7 | @main | `- error: 'main' attribute cannot be used in a module that contains top-level code 8 | class Runner { 9 | static func main() async throws {