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This makes sure that Swift respects `-Xcc -stdlib=libc++` flags. Clang already has existing logic to discover the system-wide libc++ installation on Linux. We rely on that logic here. Importing a Swift module that was built with a different C++ stdlib is not supported and emits an error. The Cxx module can be imported when compiling with any C++ stdlib. The synthesized conformances, e.g. to CxxRandomAccessCollection also work. However, CxxStdlib currently cannot be imported when compiling with libc++, since on Linux it refers to symbols from libstdc++ which have different mangled names in libc++. rdar://118357548 / https://github.com/swiftlang/swift/issues/69825
7 lines
319 B
Swift
7 lines
319 B
Swift
// RUN: not %target-swift-frontend -typecheck -Xcc -stdlib=invalid -cxx-interoperability-mode=default %s 2>&1 | %FileCheck %s
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// Windows does not honor `-stdlib=xyz` arguments, so the error message is different on Windows.
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// XFAIL: OS=windows-msvc
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// CHECK: error: invalid library name in argument '-stdlib=invalid'
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