koher

@swift-6.0.3 protocol P { func foo() -> Int? } struct S: P { func foo() -> Int { 42 } } let s = S() print(s.foo())

exit status: 1 with

<stdin>:5:8: error: type 'S' does not conform to protocol 'P' 1 | protocol P { 2 | func foo() -> Int? | `- note: protocol requires function 'foo()' with type '() -> Int?'; add a stub for conformance 3 | } 4 | 5 | struct S: P { | `- error: type 'S' does not conform to protocol 'P' 6 | func foo() -> Int { 42 } | `- note: candidate has non-matching type '() -> Int' 7 | } 8 |