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// RUN: %target-typecheck-verify-swift
// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend -primary-file %s %S/Inputs/composition_extension_usage.swift -emit-module-path %t/P-partial.swiftmodule -module-name M -enable-testing
// RUN: %target-swift-frontend -primary-file %S/Inputs/composition_extension_usage.swift %s -emit-module-path %t/S-partial.swiftmodule -module-name M -enable-testing
// RUN: %target-swift-frontend -merge-modules -emit-module %t/P-partial.swiftmodule %t/S-partial.swiftmodule -o %t/M.swiftmodule
// https://github.com/apple/swift/issues/53628
protocol P1 {}
protocol P1_1 : P1 {
func p1_1()
}
protocol P2 {}
extension P1 & P1_1 where Self : P2 {
// expected-warning@-1 {{extending a protocol composition is not supported; extending 'P1' instead}}
// expected-note@-2 {{did you mean to extend the most specific type 'P1_1' instead?}} {{11-20=P1_1}}
func p1_1() {}
}
extension P1_1 & P1 where Self : P2 {
// expected-warning@-1 {{extending a protocol composition is not supported; extending 'P1_1' instead}} {{11-20=P1_1}}
func p1_1_alt() {}
}
typealias T1 = P1 & P1_1
extension T1 {
// expected-warning@-1 {{extending a protocol composition is not supported; extending 'P1' instead}}
// expected-note@-2 {{did you mean to extend the most specific type 'P1_1' instead?}} {{11-13=P1_1}}
func t1() {}
}
typealias T2 = T1
extension T2 {
// expected-warning@-1 {{extending a protocol composition is not supported; extending 'P1' instead}}
// expected-note@-2 {{did you mean to extend the most specific type 'P1_1' instead?}} {{11-13=P1_1}}
func t2() {}
}
typealias T3 = P1_1 & P1
extension T3 { // Ideally, we should emit a warning here but the current implementation doesn't do that.
func t3() {}
}
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