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[cxx-interop] Test std::optional with AddressableParameters #82809

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Sep 11, 2025
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[cxx-interop] Test std::optional with AddressableParameters #82809

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14 changes: 12 additions & 2 deletions test/Interop/Cxx/stdlib/use-std-optional.swift
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Original file line number Diff line number Diff line change
@@ -1,9 +1,11 @@
// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -cxx-interoperability-mode=swift-5.9)
// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -cxx-interoperability-mode=swift-6)
// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -cxx-interoperability-mode=upcoming-swift)
// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -cxx-interoperability-mode=upcoming-swift -enable-experimental-feature AddressableParameters)
// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -cxx-interoperability-mode=upcoming-swift -Xcc -std=c++20)
//
// REQUIRES: executable_test
// REQUIRES: swift_feature_AddressableParameters

// Undefined hidden symbol to C++ voidify in libcxx
// rdar://121551667
Expand Down Expand Up @@ -62,10 +64,18 @@ StdOptionalTestSuite.test("std::optional init(_:Wrapped)") {

// FIXME: making these variables immutable triggers a miscompile on Linux
// (https://github.com/swiftlang/swift/issues/82765)
var optBoolT = StdOptionalBool(true)
var optBoolF = StdOptionalBool(false)
var optBoolTMutable = StdOptionalBool(true)
var optBoolFMutable = StdOptionalBool(false)
expectTrue(optBoolTMutable.pointee)
expectFalse(optBoolFMutable.pointee)

// If AddressableParameters are enabled, this issue does not happen.
#if hasFeature(AddressableParameters)
let optBoolT = StdOptionalBool(true)
let optBoolF = StdOptionalBool(false)
expectTrue(optBoolT.pointee)
expectFalse(optBoolF.pointee)
#endif

let optString = StdOptionalString(std.string("abc"))
expectEqual(std.string("abc"), optString.pointee)
Expand Down