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fc3b3a1d71
This is an expiremental feature to allow an attribute, `import_as_ref`, to import a C++ record as a non-reference-counted reference type in Swift.
26 lines
1.1 KiB
C
26 lines
1.1 KiB
C
#ifndef TEST_INTEROP_CXX_FOREIGN_REFERENCE_INPUTS_VISIBILITY_H
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#define TEST_INTEROP_CXX_FOREIGN_REFERENCE_INPUTS_VISIBILITY_H
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#if __has_feature(nullability)
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// Provide macros to temporarily suppress warning about the use of
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// _Nullable and _Nonnull.
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# define SWIFT_BEGIN_NULLABILITY_ANNOTATIONS \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wnullability-extension\"") \
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_Pragma("clang assume_nonnull begin")
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# define SWIFT_END_NULLABILITY_ANNOTATIONS \
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_Pragma("clang diagnostic pop") \
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_Pragma("clang assume_nonnull end")
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#else
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// #define _Nullable and _Nonnull to nothing if we're not being built
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// with a compiler that supports them.
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# define _Nullable
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# define _Nonnull
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# define _Null_unspecified
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# define SWIFT_BEGIN_NULLABILITY_ANNOTATIONS
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# define SWIFT_END_NULLABILITY_ANNOTATIONS
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#endif
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#endif // TEST_INTEROP_CXX_FOREIGN_REFERENCE_INPUTS_VISIBILITY_H
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