diff --git a/clang/lib/Sema/SemaAvailability.cpp b/clang/lib/Sema/SemaAvailability.cpp index 05ad42780e500..84c06566387cc 100644 --- a/clang/lib/Sema/SemaAvailability.cpp +++ b/clang/lib/Sema/SemaAvailability.cpp @@ -123,6 +123,18 @@ ShouldDiagnoseAvailabilityInContext(Sema &S, AvailabilityResult K, const NamedDecl *OffendingDecl) { assert(K != AR_Available && "Expected an unavailable declaration here!"); + // If this was defined using CF_OPTIONS, etc. then ignore the diagnostic. + auto DeclLoc = Ctx->getBeginLoc(); + // This is only a problem in Foundation's C++ implementation for CF_OPTIONS. + if (DeclLoc.isMacroID() && S.getLangOpts().CPlusPlus && + isa(OffendingDecl)) { + StringRef MacroName = S.getPreprocessor().getImmediateMacroName(DeclLoc); + if (MacroName == "CF_OPTIONS" || MacroName == "OBJC_OPTIONS" || + MacroName == "SWIFT_OPTIONS" || MacroName == "NS_OPTIONS") { + return false; + } + } + // Checks if we should emit the availability diagnostic in the context of C. auto CheckContext = [&](const Decl *C) { if (K == AR_NotYetIntroduced) { diff --git a/clang/test/SemaCXX/suppress-availability-error-cf-options.cpp b/clang/test/SemaCXX/suppress-availability-error-cf-options.cpp new file mode 100644 index 0000000000000..c28018464513f --- /dev/null +++ b/clang/test/SemaCXX/suppress-availability-error-cf-options.cpp @@ -0,0 +1,9 @@ +// RUN: %clang_cc1 -fsyntax-only -verify %s +// expected-no-diagnostics + +#define CF_OPTIONS(_type, _name) __attribute__((availability(swift, unavailable))) _type _name; enum : _name + +__attribute__((availability(macOS, unavailable))) +typedef CF_OPTIONS(unsigned, TestOptions) { + x +};