[cxx-interop] Enable foreign reference types in C interop #82680
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egorzhdan
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j-hui,
fahadnayyar,
susmonteiro,
hnrklssn,
artemcm,
tshortli,
beccadax,
ian-twilightcoder and
DougGregor
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@swift-ci please test |
| @@ -864,11 +864,6 @@ def cxx_interoperability_mode : | |||
| SwiftSynthesizeInterfaceOption]>, | |||
| HelpText<"Enables C++ interoperability; pass 'default' to enable or 'off' to disable">; | |||
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| def experimental_c_foreign_reference_types : | |||
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I don't have a strong feeling here, but in case someone used this their build now would fail due to unknown argument. Should we make it deprecated/noop for one release? I am also OK just removing it straight away.
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Yeah, that's a fair point, I just don't think anyone uses this flag at the moment. But I also don't feel strongly.
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I'd rather leave the flag and ignore it (or emit a deprecation message). I've mentioned this flag in various places, so I wouldn't be surprised if it was used somewhere.
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Sounds good, I brought back the flag, with a deprecation note.
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Other deprecated flags also trigger a diag::warn_flag_deprecated diagnostic. I think we should do the same.
The flag is being removed in the compiler: swiftlang/swift#82680. C foreign reference types will now be available unconditionally. rdar://150308819
The flag is being removed in the compiler: swiftlang/swift#82680. C foreign reference types will now be available unconditionally. rdar://150308819
| @@ -864,11 +864,6 @@ def cxx_interoperability_mode : | |||
| SwiftSynthesizeInterfaceOption]>, | |||
| HelpText<"Enables C++ interoperability; pass 'default' to enable or 'off' to disable">; | |||
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| def experimental_c_foreign_reference_types : | |||
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I'd rather leave the flag and ignore it (or emit a deprecation message). I've mentioned this flag in various places, so I wouldn't be surprised if it was used somewhere.
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Most of the logic for C++ foreign reference types can be applied to C types as well. Swift had a compiler flag `-Xfrontend -experimental-c-foreign-reference-types` for awhile now which enables foreign reference types without having to enable C++ interop. This change makes it the default behavior. Since we don't expect anyone to pass `experimental-c-foreign-reference-types` currently, this also removes the frontend flag. rdar://150308819
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Most of the logic for C++ foreign reference types can be applied to C types as well. Swift had a compiler flag
-Xfrontend -experimental-c-foreign-reference-typesfor awhile now which enables foreign reference types without having to enable C++ interop. This change makes it the default behavior.Since we don't expect anyone to pass
experimental-c-foreign-reference-typescurrently, this also removes the frontend flag.rdar://150308819