[clang] [APINotes] Support annotating safety of APIs (PR #157506)
Gábor Horváth via cfe-commits
cfe-commits at lists.llvm.org
Fri Sep 12 07:42:40 PDT 2025
https://github.com/Xazax-hun updated https://github.com/llvm/llvm-project/pull/157506
>From 1fd3a7966a2873ebc482a569f4ce04ffdb10ed99 Mon Sep 17 00:00:00 2001
From: Gabor Horvath <gaborh at apple.com>
Date: Mon, 8 Sep 2025 17:21:45 +0100
Subject: [PATCH] [APINotes] Support annotating safety of APIs
Swift supports a strictly memory safe mode where every expressions using
an unsafe feature or API need to be annotatated with the unsafe effect.
This sometimes requires adding safety annotations to the foreign APIs.
This PR adds support to inject such safety annotations.
---
clang/docs/APINotes.rst | 14 ++++++++
clang/include/clang/APINotes/Types.h | 28 +++++++++++++--
clang/lib/APINotes/APINotesFormat.h | 2 +-
clang/lib/APINotes/APINotesReader.cpp | 13 ++++---
clang/lib/APINotes/APINotesTypes.cpp | 15 ++++++++
clang/lib/APINotes/APINotesWriter.cpp | 6 ++++
clang/lib/APINotes/APINotesYAMLCompiler.cpp | 34 +++++++++++++++++++
clang/lib/Sema/SemaAPINotes.cpp | 24 +++++++++++++
.../Inputs/Headers/SwiftImportAs.apinotes | 21 ++++++++++++
.../APINotes/Inputs/Headers/SwiftImportAs.h | 11 ++++++
clang/test/APINotes/swift-import-as.cpp | 30 ++++++++++++++++
11 files changed, 190 insertions(+), 8 deletions(-)
diff --git a/clang/docs/APINotes.rst b/clang/docs/APINotes.rst
index dec4b186ff72f..e142cfa62e5a2 100644
--- a/clang/docs/APINotes.rst
+++ b/clang/docs/APINotes.rst
@@ -229,6 +229,20 @@ declaration kind), all of which are optional:
- Name: vector
SwiftConformsTo: Cxx.CxxSequence
+:SwiftSafety:
+
+ Import a declaration as ``@safe`` or ``@unsafe`` to Swift.
+
+ ::
+
+ Tags:
+ - Name: UnsafeType
+ SwiftSafety: unsafe
+ - Name: span
+ Methods:
+ - Name: size
+ SwiftSafety: safe
+
:Availability, AvailabilityMsg:
A value of "nonswift" is equivalent to ``NS_SWIFT_UNAVAILABLE``. A value of
diff --git a/clang/include/clang/APINotes/Types.h b/clang/include/clang/APINotes/Types.h
index 71625715bda19..fb2b91a3e1750 100644
--- a/clang/include/clang/APINotes/Types.h
+++ b/clang/include/clang/APINotes/Types.h
@@ -46,6 +46,8 @@ enum class SwiftNewTypeKind {
Enum,
};
+enum class SwiftSafetyKind { Unspecified, Safe, Unsafe, None };
+
/// Describes API notes data for any entity.
///
/// This is used as the base of all API notes.
@@ -71,13 +73,19 @@ class CommonEntityInfo {
LLVM_PREFERRED_TYPE(bool)
unsigned SwiftPrivate : 1;
+ LLVM_PREFERRED_TYPE(bool)
+ unsigned SwiftSafetyAudited : 1;
+
+ LLVM_PREFERRED_TYPE(SwiftSafetyKind)
+ unsigned SwiftSafety : 2;
+
public:
/// Swift name of this entity.
std::string SwiftName;
CommonEntityInfo()
: Unavailable(0), UnavailableInSwift(0), SwiftPrivateSpecified(0),
- SwiftPrivate(0) {}
+ SwiftPrivate(0), SwiftSafetyAudited(0), SwiftSafety(0) {}
std::optional<bool> isSwiftPrivate() const {
return SwiftPrivateSpecified ? std::optional<bool>(SwiftPrivate)
@@ -89,6 +97,17 @@ class CommonEntityInfo {
SwiftPrivate = Private.value_or(0);
}
+ std::optional<SwiftSafetyKind> getSwiftSafety() const {
+ return SwiftSafetyAudited ? std::optional<SwiftSafetyKind>(
+ static_cast<SwiftSafetyKind>(SwiftSafety))
+ : std::nullopt;
+ }
+
+ void setSwiftSafety(SwiftSafetyKind Safety) {
+ SwiftSafetyAudited = 1;
+ SwiftSafety = static_cast<unsigned>(Safety);
+ }
+
friend bool operator==(const CommonEntityInfo &, const CommonEntityInfo &);
CommonEntityInfo &operator|=(const CommonEntityInfo &RHS) {
@@ -108,6 +127,9 @@ class CommonEntityInfo {
if (!SwiftPrivateSpecified)
setSwiftPrivate(RHS.isSwiftPrivate());
+ if (!SwiftSafetyAudited && RHS.SwiftSafetyAudited)
+ setSwiftSafety(*RHS.getSwiftSafety());
+
if (SwiftName.empty())
SwiftName = RHS.SwiftName;
@@ -123,7 +145,9 @@ inline bool operator==(const CommonEntityInfo &LHS,
LHS.Unavailable == RHS.Unavailable &&
LHS.UnavailableInSwift == RHS.UnavailableInSwift &&
LHS.SwiftPrivateSpecified == RHS.SwiftPrivateSpecified &&
- LHS.SwiftPrivate == RHS.SwiftPrivate && LHS.SwiftName == RHS.SwiftName;
+ LHS.SwiftPrivate == RHS.SwiftPrivate &&
+ LHS.SwiftSafetyAudited == RHS.SwiftSafetyAudited &&
+ LHS.SwiftSafety == RHS.SwiftSafety && LHS.SwiftName == RHS.SwiftName;
}
inline bool operator!=(const CommonEntityInfo &LHS,
diff --git a/clang/lib/APINotes/APINotesFormat.h b/clang/lib/APINotes/APINotesFormat.h
index 69d180e7b3eb5..bb423ccb2bfaf 100644
--- a/clang/lib/APINotes/APINotesFormat.h
+++ b/clang/lib/APINotes/APINotesFormat.h
@@ -24,7 +24,7 @@ const uint16_t VERSION_MAJOR = 0;
/// API notes file minor version number.
///
/// When the format changes IN ANY WAY, this number should be incremented.
-const uint16_t VERSION_MINOR = 37; // SwiftDestroyOp
+const uint16_t VERSION_MINOR = 38; // SwiftSafety
const uint8_t kSwiftConforms = 1;
const uint8_t kSwiftDoesNotConform = 2;
diff --git a/clang/lib/APINotes/APINotesReader.cpp b/clang/lib/APINotes/APINotesReader.cpp
index 573356f97ff73..7f9bb5f12cda7 100644
--- a/clang/lib/APINotes/APINotesReader.cpp
+++ b/clang/lib/APINotes/APINotesReader.cpp
@@ -94,11 +94,14 @@ class VersionedTableInfo {
/// Read serialized CommonEntityInfo.
void ReadCommonEntityInfo(const uint8_t *&Data, CommonEntityInfo &Info) {
- uint8_t UnavailableBits = *Data++;
- Info.Unavailable = (UnavailableBits >> 1) & 0x01;
- Info.UnavailableInSwift = UnavailableBits & 0x01;
- if ((UnavailableBits >> 2) & 0x01)
- Info.setSwiftPrivate(static_cast<bool>((UnavailableBits >> 3) & 0x01));
+ uint8_t EncodedBits = *Data++;
+ Info.Unavailable = (EncodedBits >> 1) & 0x01;
+ Info.UnavailableInSwift = EncodedBits & 0x01;
+ if ((EncodedBits >> 2) & 0x01)
+ Info.setSwiftPrivate(static_cast<bool>((EncodedBits >> 3) & 0x01));
+ if ((EncodedBits >> 4) & 0x01)
+ Info.setSwiftSafety(
+ static_cast<SwiftSafetyKind>((EncodedBits >> 5) & 0x03));
unsigned MsgLength =
endian::readNext<uint16_t, llvm::endianness::little>(Data);
diff --git a/clang/lib/APINotes/APINotesTypes.cpp b/clang/lib/APINotes/APINotesTypes.cpp
index f726faa832bcc..bff4be104c6c8 100644
--- a/clang/lib/APINotes/APINotesTypes.cpp
+++ b/clang/lib/APINotes/APINotesTypes.cpp
@@ -18,6 +18,21 @@ LLVM_DUMP_METHOD void CommonEntityInfo::dump(llvm::raw_ostream &OS) const {
OS << "[UnavailableInSwift] ";
if (SwiftPrivateSpecified)
OS << (SwiftPrivate ? "[SwiftPrivate] " : "");
+ if (SwiftSafetyAudited) {
+ switch (*getSwiftSafety()) {
+ case SwiftSafetyKind::Safe:
+ OS << "[Safe] ";
+ break;
+ case SwiftSafetyKind::Unsafe:
+ OS << "[Unsafe] ";
+ break;
+ case SwiftSafetyKind::Unspecified:
+ OS << "[Unspecified] ";
+ break;
+ case SwiftSafetyKind::None:
+ break;
+ }
+ }
if (!SwiftName.empty())
OS << "Swift Name: " << SwiftName << ' ';
OS << '\n';
diff --git a/clang/lib/APINotes/APINotesWriter.cpp b/clang/lib/APINotes/APINotesWriter.cpp
index cf88d118d0979..47ed93a567c0e 100644
--- a/clang/lib/APINotes/APINotesWriter.cpp
+++ b/clang/lib/APINotes/APINotesWriter.cpp
@@ -507,6 +507,12 @@ void emitCommonEntityInfo(raw_ostream &OS, const CommonEntityInfo &CEI) {
llvm::support::endian::Writer writer(OS, llvm::endianness::little);
uint8_t payload = 0;
+ if (auto safety = CEI.getSwiftSafety()) {
+ payload = static_cast<unsigned>(*safety);
+ payload <<= 1;
+ payload |= 0x01;
+ }
+ payload <<= 2;
if (auto swiftPrivate = CEI.isSwiftPrivate()) {
payload |= 0x01;
if (*swiftPrivate)
diff --git a/clang/lib/APINotes/APINotesYAMLCompiler.cpp b/clang/lib/APINotes/APINotesYAMLCompiler.cpp
index a91a1eea03d81..8e91d48b4ba62 100644
--- a/clang/lib/APINotes/APINotesYAMLCompiler.cpp
+++ b/clang/lib/APINotes/APINotesYAMLCompiler.cpp
@@ -29,6 +29,18 @@
using namespace clang;
using namespace api_notes;
+namespace llvm {
+namespace yaml {
+template <> struct ScalarEnumerationTraits<SwiftSafetyKind> {
+ static void enumeration(IO &IO, SwiftSafetyKind &SK) {
+ IO.enumCase(SK, "unspecified", SwiftSafetyKind::Unspecified);
+ IO.enumCase(SK, "safe", SwiftSafetyKind::Safe);
+ IO.enumCase(SK, "unsafe", SwiftSafetyKind::Unsafe);
+ }
+};
+} // namespace yaml
+} // namespace llvm
+
namespace {
enum class APIAvailability {
Available = 0,
@@ -163,6 +175,7 @@ struct Method {
bool Required = false;
StringRef ResultType;
StringRef SwiftReturnOwnership;
+ SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
typedef std::vector<Method> MethodsSeq;
@@ -199,6 +212,7 @@ template <> struct MappingTraits<Method> {
IO.mapOptional("ResultType", M.ResultType, StringRef(""));
IO.mapOptional("SwiftReturnOwnership", M.SwiftReturnOwnership,
StringRef(""));
+ IO.mapOptional("SwiftSafety", M.SafetyKind, SwiftSafetyKind::None);
}
};
} // namespace yaml
@@ -214,6 +228,7 @@ struct Property {
StringRef SwiftName;
std::optional<bool> SwiftImportAsAccessors;
StringRef Type;
+ SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
typedef std::vector<Property> PropertiesSeq;
@@ -235,6 +250,7 @@ template <> struct MappingTraits<Property> {
IO.mapOptional("SwiftName", P.SwiftName, StringRef(""));
IO.mapOptional("SwiftImportAsAccessors", P.SwiftImportAsAccessors);
IO.mapOptional("Type", P.Type, StringRef(""));
+ IO.mapOptional("SwiftSafety", P.SafetyKind, SwiftSafetyKind::None);
}
};
} // namespace yaml
@@ -254,6 +270,7 @@ struct Class {
std::optional<std::string> SwiftConformance;
MethodsSeq Methods;
PropertiesSeq Properties;
+ SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
typedef std::vector<Class> ClassesSeq;
@@ -279,6 +296,7 @@ template <> struct MappingTraits<Class> {
IO.mapOptional("SwiftConformsTo", C.SwiftConformance);
IO.mapOptional("Methods", C.Methods);
IO.mapOptional("Properties", C.Properties);
+ IO.mapOptional("SwiftSafety", C.SafetyKind, SwiftSafetyKind::None);
}
};
} // namespace yaml
@@ -297,6 +315,7 @@ struct Function {
StringRef Type;
StringRef ResultType;
StringRef SwiftReturnOwnership;
+ SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
typedef std::vector<Function> FunctionsSeq;
@@ -321,6 +340,7 @@ template <> struct MappingTraits<Function> {
IO.mapOptional("ResultType", F.ResultType, StringRef(""));
IO.mapOptional("SwiftReturnOwnership", F.SwiftReturnOwnership,
StringRef(""));
+ IO.mapOptional("SwiftSafety", F.SafetyKind, SwiftSafetyKind::None);
}
};
} // namespace yaml
@@ -334,6 +354,7 @@ struct GlobalVariable {
std::optional<bool> SwiftPrivate;
StringRef SwiftName;
StringRef Type;
+ SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
typedef std::vector<GlobalVariable> GlobalVariablesSeq;
@@ -353,6 +374,7 @@ template <> struct MappingTraits<GlobalVariable> {
IO.mapOptional("SwiftPrivate", GV.SwiftPrivate);
IO.mapOptional("SwiftName", GV.SwiftName, StringRef(""));
IO.mapOptional("Type", GV.Type, StringRef(""));
+ IO.mapOptional("SwiftSafety", GV.SafetyKind, SwiftSafetyKind::None);
}
};
} // namespace yaml
@@ -364,6 +386,7 @@ struct EnumConstant {
AvailabilityItem Availability;
std::optional<bool> SwiftPrivate;
StringRef SwiftName;
+ SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
typedef std::vector<EnumConstant> EnumConstantsSeq;
@@ -381,6 +404,7 @@ template <> struct MappingTraits<EnumConstant> {
IO.mapOptional("AvailabilityMsg", EC.Availability.Msg, StringRef(""));
IO.mapOptional("SwiftPrivate", EC.SwiftPrivate);
IO.mapOptional("SwiftName", EC.SwiftName, StringRef(""));
+ IO.mapOptional("SwiftSafety", EC.SafetyKind, SwiftSafetyKind::None);
}
};
} // namespace yaml
@@ -424,6 +448,7 @@ struct Field {
std::optional<bool> SwiftPrivate;
StringRef SwiftName;
StringRef Type;
+ SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
typedef std::vector<Field> FieldsSeq;
@@ -443,6 +468,7 @@ template <> struct MappingTraits<Field> {
IO.mapOptional("SwiftPrivate", F.SwiftPrivate);
IO.mapOptional("SwiftName", F.SwiftName, StringRef(""));
IO.mapOptional("Type", F.Type, StringRef(""));
+ IO.mapOptional("SwiftSafety", F.SafetyKind, SwiftSafetyKind::None);
}
};
} // namespace yaml
@@ -470,6 +496,7 @@ struct Tag {
std::optional<EnumConvenienceAliasKind> EnumConvenienceKind;
std::optional<bool> SwiftCopyable;
std::optional<bool> SwiftEscapable;
+ SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
FunctionsSeq Methods;
FieldsSeq Fields;
@@ -515,6 +542,7 @@ template <> struct MappingTraits<Tag> {
IO.mapOptional("Methods", T.Methods);
IO.mapOptional("Fields", T.Fields);
IO.mapOptional("Tags", T.Tags);
+ IO.mapOptional("SwiftSafety", T.SafetyKind, SwiftSafetyKind::None);
}
};
} // namespace yaml
@@ -530,6 +558,7 @@ struct Typedef {
std::optional<StringRef> NSErrorDomain;
std::optional<SwiftNewTypeKind> SwiftType;
std::optional<std::string> SwiftConformance;
+ const SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
typedef std::vector<Typedef> TypedefsSeq;
@@ -602,6 +631,7 @@ struct Namespace {
StringRef SwiftName;
std::optional<bool> SwiftPrivate;
TopLevelItems Items;
+ const SwiftSafetyKind SafetyKind = SwiftSafetyKind::None;
};
} // namespace
@@ -797,6 +827,8 @@ class YAMLConverter {
StringRef APIName) {
convertAvailability(Common.Availability, Info, APIName);
Info.setSwiftPrivate(Common.SwiftPrivate);
+ if (Common.SafetyKind != SwiftSafetyKind::None)
+ Info.setSwiftSafety(Common.SafetyKind);
Info.SwiftName = std::string(Common.SwiftName);
}
@@ -956,6 +988,8 @@ class YAMLConverter {
void convertFunction(const Function &Function, FuncOrMethodInfo &FI) {
convertAvailability(Function.Availability, FI, Function.Name);
FI.setSwiftPrivate(Function.SwiftPrivate);
+ if (Function.SafetyKind != SwiftSafetyKind::None)
+ FI.setSwiftSafety(Function.SafetyKind);
FI.SwiftName = std::string(Function.SwiftName);
std::optional<ParamInfo> This;
convertParams(Function.Params, FI, This);
diff --git a/clang/lib/Sema/SemaAPINotes.cpp b/clang/lib/Sema/SemaAPINotes.cpp
index 4cc1b76264340..99a29add8211d 100644
--- a/clang/lib/Sema/SemaAPINotes.cpp
+++ b/clang/lib/Sema/SemaAPINotes.cpp
@@ -13,6 +13,7 @@
#include "CheckExprLifetime.h"
#include "TypeLocBuilder.h"
#include "clang/APINotes/APINotesReader.h"
+#include "clang/APINotes/Types.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
@@ -291,6 +292,29 @@ static void ProcessAPINotes(Sema &S, Decl *D,
});
}
+ // swift_safety
+ if (auto SafetyKind = Info.getSwiftSafety()) {
+ bool Addition = *SafetyKind != api_notes::SwiftSafetyKind::Unspecified;
+ handleAPINotedAttribute<SwiftAttrAttr>(
+ S, D, Addition, Metadata,
+ [&] {
+ return SwiftAttrAttr::Create(
+ S.Context, *SafetyKind == api_notes::SwiftSafetyKind::Safe
+ ? "safe"
+ : "unsafe");
+ },
+ [](const Decl *D) {
+ return llvm::find_if(D->attrs(), [](const Attr *attr) {
+ if (const auto *swiftAttr = dyn_cast<SwiftAttrAttr>(attr)) {
+ if (swiftAttr->getAttribute() == "safe" ||
+ swiftAttr->getAttribute() == "unsafe")
+ return true;
+ }
+ return false;
+ });
+ });
+ }
+
// swift_name
if (!Info.SwiftName.empty()) {
handleAPINotedAttribute<SwiftNameAttr>(
diff --git a/clang/test/APINotes/Inputs/Headers/SwiftImportAs.apinotes b/clang/test/APINotes/Inputs/Headers/SwiftImportAs.apinotes
index 15c806842d08f..7e9cac32df3a5 100644
--- a/clang/test/APINotes/Inputs/Headers/SwiftImportAs.apinotes
+++ b/clang/test/APINotes/Inputs/Headers/SwiftImportAs.apinotes
@@ -35,6 +35,14 @@ Tags:
- Name: NoncopyableWithDestroyType
SwiftCopyable: false
SwiftDestroyOp: NCDDestroy
+- Name: ImportAsUnsafeStruct
+ SwiftSafety: unsafe
+- Name: StructWithUnsafeMethod
+ Methods:
+ - Name: ImportAsUnsafeMethod
+ SwiftSafety: unsafe
+ - Name: ImportAsUnsafeMethodActuallySafe
+ SwiftSafety: safe
Functions:
- Name: functionReturningFrt__
@@ -42,7 +50,20 @@ Functions:
SwiftReturnOwnership: unretained
- Name: functionReturningFrt_returns_retained
SwiftReturnOwnership: retained
+ - Name: ImportAsUnsafe
+ SwiftSafety: unsafe
+ - Name: ImportAsUnsafeAlreadyAnnotated
+ SwiftSafety: unspecified
Typedefs:
- Name: WrappedOptions
SwiftWrapper: struct
SwiftConformsTo: Swift.OptionSet
+SwiftVersions:
+ - Version: 3.0
+ Functions:
+ - Name: ImportAsUnsafeVersioned
+ SwiftSafety: unsafe
+ - Version: 6.0
+ Functions:
+ - Name: ImportAsUnsafeVersioned
+ SwiftSafety: safe
diff --git a/clang/test/APINotes/Inputs/Headers/SwiftImportAs.h b/clang/test/APINotes/Inputs/Headers/SwiftImportAs.h
index 978b4fbbb3b00..272e3865ab2ba 100644
--- a/clang/test/APINotes/Inputs/Headers/SwiftImportAs.h
+++ b/clang/test/APINotes/Inputs/Headers/SwiftImportAs.h
@@ -36,3 +36,14 @@ struct NoncopyableWithDestroyType {
};
void NCDDestroy(NoncopyableWithDestroyType instance);
+
+void ImportAsUnsafe();
+struct ImportAsUnsafeStruct {
+};
+struct StructWithUnsafeMethod {
+ void ImportAsUnsafeMethod();
+ void ImportAsUnsafeMethodActuallySafe();
+};
+
+void ImportAsUnsafeAlreadyAnnotated() __attribute__((swift_attr("unsafe")));
+void ImportAsUnsafeVersioned();
diff --git a/clang/test/APINotes/swift-import-as.cpp b/clang/test/APINotes/swift-import-as.cpp
index f5d08df7c6a1b..20d38b5a0968d 100644
--- a/clang/test/APINotes/swift-import-as.cpp
+++ b/clang/test/APINotes/swift-import-as.cpp
@@ -16,6 +16,7 @@
// RUN: %clang_cc1 -fmodules -fblocks -fimplicit-module-maps -fmodules-cache-path=%t/ModulesCache -fdisable-module-hash -fapinotes-modules -I %S/Inputs/Headers %s -x c++ -ast-dump -ast-dump-filter methodReturningFrt_returns_retained | FileCheck -check-prefix=CHECK-METHOD-RETURNING-FRT-RETAINED %s
// RUN: %clang_cc1 -fmodules -fblocks -fimplicit-module-maps -fmodules-cache-path=%t/ModulesCache -fdisable-module-hash -fapinotes-modules -I %S/Inputs/Headers %s -x c++ -ast-dump -ast-dump-filter WrappedOptions | FileCheck -check-prefix=CHECK-WRAPPED-OPTIONS %s
// RUN: %clang_cc1 -fmodules -fblocks -fimplicit-module-maps -fmodules-cache-path=%t/ModulesCache -fdisable-module-hash -fapinotes-modules -I %S/Inputs/Headers %s -x c++ -ast-dump -ast-dump-filter NoncopyableWithDestroyType | FileCheck -check-prefix=CHECK-NONCOPYABLE-WITH-DESTROY %s
+// RUN: %clang_cc1 -fmodules -fblocks -fimplicit-module-maps -fmodules-cache-path=%t/ModulesCache -fdisable-module-hash -fapinotes-modules -I %S/Inputs/Headers %s -x c++ -ast-dump -ast-dump-filter ImportAsUnsafe | FileCheck -check-prefix=CHECK-IMPORT-AS-UNSAFE %s
#include <SwiftImportAs.h>
@@ -103,3 +104,32 @@
// CHECK-NONCOPYABLE-WITH-DESTROY: RecordDecl {{.*}}struct NoncopyableWithDestroyType
// CHECK-NONCOPYABLE-WITH-DESTROY: SwiftAttrAttr {{.+}} "destroy:NCDDestroy"
// CHECK-NONCOPYABLE-WITH-DESTROY: SwiftAttrAttr {{.+}} "~Copyable"
+
+// CHECK-IMPORT-AS-UNSAFE: Dumping ImportAsUnsafe:
+// CHECK-IMPORT-AS-UNSAFE: FunctionDecl {{.+}} ImportAsUnsafe
+// CHECK-IMPORT-AS-UNSAFE: SwiftAttrAttr {{.+}} "unsafe"
+
+// CHECK-IMPORT-AS-UNSAFE: Dumping ImportAsUnsafeStruct:
+// CHECK-IMPORT-AS-UNSAFE: CXXRecordDecl {{.+}} ImportAsUnsafeStruct
+// CHECK-IMPORT-AS-UNSAFE: SwiftAttrAttr {{.+}} "unsafe"
+
+// CHECK-IMPORT-AS-UNSAFE: Dumping StructWithUnsafeMethod::ImportAsUnsafeMethod:
+// CHECK-IMPORT-AS-UNSAFE: CXXMethodDecl {{.+}} ImportAsUnsafeMethod
+// CHECK-IMPORT-AS-UNSAFE: SwiftAttrAttr {{.+}} "unsafe"
+
+// CHECK-IMPORT-AS-UNSAFE: Dumping StructWithUnsafeMethod::ImportAsUnsafeMethodActuallySafe:
+// CHECK-IMPORT-AS-UNSAFE: CXXMethodDecl {{.+}} ImportAsUnsafeMethodActuallySafe
+// CHECK-IMPORT-AS-UNSAFE: SwiftAttrAttr {{.+}} "safe"
+
+// CHECK-IMPORT-AS-UNSAFE: Dumping ImportAsUnsafeAlreadyAnnotated:
+// CHECK-IMPORT-AS-UNSAFE: FunctionDecl {{.+}} ImportAsUnsafeAlreadyAnnotated
+// CHECK-IMPORT-AS-UNSAFE: SwiftVersionedAdditionAttr {{.+}} IsReplacedByActive
+// CHECK-IMPORT-AS-UNSAFE: SwiftAttrAttr {{.+}} "unsafe"
+// CHECK-IMPORT-AS-UNSAFE-EMPTY:
+
+// CHECK-IMPORT-AS-UNSAFE: Dumping ImportAsUnsafeVersioned:
+// CHECK-IMPORT-AS-UNSAFE: FunctionDecl {{.+}} ImportAsUnsafeVersioned
+// CHECK-IMPORT-AS-UNSAFE: SwiftVersionedAdditionAttr {{.+}} 3.0
+// CHECK-IMPORT-AS-UNSAFE: SwiftAttrAttr {{.+}} "unsafe"
+// CHECK-IMPORT-AS-UNSAFE: SwiftVersionedAdditionAttr {{.+}} 6.0
+// CHECK-IMPORT-AS-UNSAFE: SwiftAttrAttr {{.+}} "safe"
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