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[cxx-interop] Name lookup failures in C++20 mode on Linux #65710

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#65715
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[cxx-interop] Name lookup failures in C++20 mode on Linux#65710
#65715
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egorzhdan
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LinuxPlatform: LinuxbugA deviation from expected or documented behavior. Also: expected but undesirable behavior.c++ interopFeature: Interoperability with C++c++ to swiftFeature → c++ interop: c++ to swiftcompilerThe Swift compiler itselfname lookupArea → compiler → type checker: Name lookupswift 5.9unexpected errorBug: Unexpected error
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@egorzhdan
egorzhdan
opened on May 5, 2023

Running test/Interop/Cxx/concepts/method-requires.swift on Linux exposes a name lookup issue:

test/Interop/Cxx/concepts/method-requires.swift:5:9: error: cannot find 'MyStruct' in scope
var s = MyStruct()
        ^~~~~~~~

This is only reproducible when -Xcc -std=gnu++20 is passed.

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LinuxPlatform: LinuxbugA deviation from expected or documented behavior. Also: expected but undesirable behavior.c++ interopFeature: Interoperability with C++c++ to swiftFeature → c++ interop: c++ to swiftcompilerThe Swift compiler itselfname lookupArea → compiler → type checker: Name lookupswift 5.9unexpected errorBug: Unexpected error

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