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Pass -Xcc -std=c++2b to Swift when CLANG_CXX_LANGUAGE_STANDARD is set to c++2b #837

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Merged
merged 1 commit into from
Oct 3, 2025
Merged

Pass -Xcc -std=c++2b to Swift when CLANG_CXX_LANGUAGE_STANDARD is set to c++2b #837

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2 changes: 2 additions & 0 deletions Sources/SWBUniversalPlatform/Specs/Swift.xcspec
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Original file line number Diff line number Diff line change
Expand Up @@ -1420,6 +1420,8 @@
"objcxx-gnu++20" = ("-Xcc", "-std=$(CLANG_CXX_LANGUAGE_STANDARD)");
"objcxx-c++23" = ("-Xcc", "-std=$(CLANG_CXX_LANGUAGE_STANDARD)");
"objcxx-gnu++23" = ("-Xcc", "-std=$(CLANG_CXX_LANGUAGE_STANDARD)");
"objcxx-c++2b" = ("-Xcc", "-std=$(CLANG_CXX_LANGUAGE_STANDARD)");
"objcxx-gnu++2b" = ("-Xcc", "-std=$(CLANG_CXX_LANGUAGE_STANDARD)");
"<<otherwise>>" = ();
};
},
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9 changes: 9 additions & 0 deletions Tests/SWBTaskConstructionTests/SwiftTaskConstructionTests.swift
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Expand Up @@ -4052,6 +4052,15 @@ fileprivate struct SwiftTaskConstructionTests: CoreBasedTests {
}
}

try await withTemporaryDirectory { tmpDir in
let tester = try await setupInteropTest(tmpDir, enableInterop: true, cxxLangStandard: "c++2b")
await tester.checkBuild(runDestination: .macOS) { results in
results.checkTask(.matchRuleType("SwiftDriver Compilation")) { task in
task.checkCommandLineContainsUninterrupted(["-Xcc", "-std=c++2b"])
}
}
}

// Verify that we don't pass C++ settings to Swift compilations when C++
// interoperability is disabled.
try await withTemporaryDirectory { tmpDir in
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