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// RUN: %target-swift-emit-silgen -module-name Test -parse-as-library %s -verify -unavailable-decl-optimization=stub | %FileCheck %s --check-prefixes=CHECK
public struct S {}
public protocol P {
static func requirement(_ s: S) -> Self
}
public enum EnumWithProtocolWitness {
@available(*, unavailable)
case requirement(_ s: S)
}
@available(*, unavailable)
extension EnumWithProtocolWitness: P {}
// protocol witness for static P.requirement(_:) in conformance EnumWithProtocolWitness
//
// CHECK-LABEL: sil{{.*}}@$s4Test23EnumWithProtocolWitnessOAA1PA2aDP11requirementyxAA1SVFZTW
// CHECK: [[FNREF:%.*]] = function_ref @$[[DIAGNOSEFN:(ss36_diagnoseUnavailableCodeReached_aeics5NeverOyF|ss31_diagnoseUnavailableCodeReacheds5NeverOyF|ss31_diagnoseUnavailableCodeReacheds5NeverOyFTwb)]] : $@convention(thin) () -> Never
// CHECK-NEXT: [[APPLY:%.*]] = apply [[FNREF]]()
// CHECK: {{%.*}} = function_ref @$s4Test23EnumWithProtocolWitnessO11requirementyAcA1SVcACmF
// CHECK: } // end sil function '$s4Test23EnumWithProtocolWitnessOAA1PA2aDP11requirementyxAA1SVFZTW'
//
// EnumWithProtocolWitness.requirement(_:)
//
// CHECK-LABEL: sil{{.*}}@$s4Test23EnumWithProtocolWitnessO11requirementyAcA1SVcACmF
// CHECK: [[FNREF:%.*]] = function_ref @$[[DIAGNOSEFN]] : $@convention(thin) () -> Never
// CHECK-NEXT: [[APPLY:%.*]] = apply [[FNREF]]()
// CHECK: enum $EnumWithProtocolWitness, #EnumWithProtocolWitness.requirement!enumelt
// CHECK: } // end sil function '$s4Test23EnumWithProtocolWitnessO11requirementyAcA1SVcACmF'
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