[Lldb-commits] [lldb] 64248d7 - [PAC][lldb][Dwarf] Support `__ptrauth`-qualified types in user expressions (#84387)
via lldb-commits
lldb-commits at lists.llvm.org
Tue Apr 30 01:15:39 PDT 2024
Author: Daniil Kovalev
Date: 2024-04-30T11:15:35+03:00
New Revision: 64248d7dee09fef4900058ba98a67feb68eb617c
URL: https://github.com/llvm/llvm-project/commit/64248d7dee09fef4900058ba98a67feb68eb617c
DIFF: https://github.com/llvm/llvm-project/commit/64248d7dee09fef4900058ba98a67feb68eb617c.diff
LOG: [PAC][lldb][Dwarf] Support `__ptrauth`-qualified types in user expressions (#84387)
Depends on #84384 and #90329
This adds support for `DW_TAG_LLVM_ptrauth_type` entries corresponding
to explicitly signed types (e.g. free function pointers) in lldb user
expressions. Applies PR https://github.com/apple/llvm-project/pull/8239
from Apple's downstream and also adds tests and related code.
---------
Co-authored-by: Jonas Devlieghere <jonas at devlieghere.com>
Added:
Modified:
lldb/include/lldb/Symbol/CompilerType.h
lldb/include/lldb/Symbol/Type.h
lldb/include/lldb/Symbol/TypeSystem.h
lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h
lldb/source/Symbol/CompilerType.cpp
lldb/source/Symbol/Type.cpp
lldb/source/Symbol/TypeSystem.cpp
lldb/unittests/SymbolFile/DWARF/DWARFASTParserClangTests.cpp
Removed:
################################################################################
diff --git a/lldb/include/lldb/Symbol/CompilerType.h b/lldb/include/lldb/Symbol/CompilerType.h
index 9e889a53086b2a..28c723abf27948 100644
--- a/lldb/include/lldb/Symbol/CompilerType.h
+++ b/lldb/include/lldb/Symbol/CompilerType.h
@@ -262,6 +262,12 @@ class CompilerType {
size_t GetPointerByteSize() const;
/// \}
+ unsigned GetPtrAuthKey() const;
+
+ unsigned GetPtrAuthDiscriminator() const;
+
+ bool GetPtrAuthAddressDiversity() const;
+
/// Accessors.
/// \{
@@ -369,6 +375,12 @@ class CompilerType {
/// Create related types using the current type's AST
CompilerType GetBasicTypeFromAST(lldb::BasicType basic_type) const;
+
+ /// Return a new CompilerType adds a ptrauth modifier from the given 32-bit
+ /// opaque payload to this type if this type is valid and the type system
+ /// supports ptrauth modifiers, else return an invalid type. Note that this
+ /// does not check if this type is a pointer.
+ CompilerType AddPtrAuthModifier(uint32_t payload) const;
/// \}
/// Exploring the type.
diff --git a/lldb/include/lldb/Symbol/Type.h b/lldb/include/lldb/Symbol/Type.h
index b5eac5fa732d67..1c4f7b5601b0c3 100644
--- a/lldb/include/lldb/Symbol/Type.h
+++ b/lldb/include/lldb/Symbol/Type.h
@@ -401,7 +401,9 @@ class Type : public std::enable_shared_from_this<Type>, public UserID {
/// This type is the type whose UID is m_encoding_uid as an atomic type.
eEncodingIsAtomicUID,
/// This type is the synthetic type whose UID is m_encoding_uid.
- eEncodingIsSyntheticUID
+ eEncodingIsSyntheticUID,
+ /// This type is a signed pointer.
+ eEncodingIsLLVMPtrAuthUID
};
enum class ResolveState : unsigned char {
diff --git a/lldb/include/lldb/Symbol/TypeSystem.h b/lldb/include/lldb/Symbol/TypeSystem.h
index 0924e21a6b54a4..7bcb8d69387a02 100644
--- a/lldb/include/lldb/Symbol/TypeSystem.h
+++ b/lldb/include/lldb/Symbol/TypeSystem.h
@@ -221,6 +221,14 @@ class TypeSystem : public PluginInterface,
virtual uint32_t GetPointerByteSize() = 0;
+ virtual unsigned GetPtrAuthKey(lldb::opaque_compiler_type_t type) = 0;
+
+ virtual unsigned
+ GetPtrAuthDiscriminator(lldb::opaque_compiler_type_t type) = 0;
+
+ virtual bool
+ GetPtrAuthAddressDiversity(lldb::opaque_compiler_type_t type) = 0;
+
// Accessors
virtual ConstString GetTypeName(lldb::opaque_compiler_type_t type,
@@ -285,6 +293,9 @@ class TypeSystem : public PluginInterface,
virtual CompilerType AddRestrictModifier(lldb::opaque_compiler_type_t type);
+ virtual CompilerType AddPtrAuthModifier(lldb::opaque_compiler_type_t type,
+ uint32_t payload);
+
/// \param opaque_payload The m_payload field of Type, which may
/// carry TypeSystem-specific extra information.
virtual CompilerType CreateTypedef(lldb::opaque_compiler_type_t type,
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
index 12dafd3f5d5d51..bea11e0e3840af 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
@@ -570,6 +570,39 @@ ExtractDataMemberLocation(DWARFDIE const &die, DWARFFormValue const &form_value,
return memberOffset.ResolveValue(nullptr).UInt();
}
+static TypePayloadClang GetPtrAuthMofidierPayload(const DWARFDIE &die) {
+ auto getAttr = [&](llvm::dwarf::Attribute Attr, unsigned defaultValue = 0) {
+ return die.GetAttributeValueAsUnsigned(Attr, defaultValue);
+ };
+ const unsigned key = getAttr(DW_AT_LLVM_ptrauth_key);
+ const bool addr_disc = getAttr(DW_AT_LLVM_ptrauth_address_discriminated);
+ const unsigned extra = getAttr(DW_AT_LLVM_ptrauth_extra_discriminator);
+ const bool isapointer = getAttr(DW_AT_LLVM_ptrauth_isa_pointer);
+ const bool authenticates_null_values =
+ getAttr(DW_AT_LLVM_ptrauth_authenticates_null_values);
+ const unsigned authentication_mode_int = getAttr(
+ DW_AT_LLVM_ptrauth_authentication_mode,
+ static_cast<unsigned>(clang::PointerAuthenticationMode::SignAndAuth));
+ clang::PointerAuthenticationMode authentication_mode =
+ clang::PointerAuthenticationMode::SignAndAuth;
+ if (authentication_mode_int >=
+ static_cast<unsigned>(clang::PointerAuthenticationMode::None) &&
+ authentication_mode_int <=
+ static_cast<unsigned>(
+ clang::PointerAuthenticationMode::SignAndAuth)) {
+ authentication_mode =
+ static_cast<clang::PointerAuthenticationMode>(authentication_mode_int);
+ } else {
+ die.GetDWARF()->GetObjectFile()->GetModule()->ReportError(
+ "[{0:x16}]: invalid pointer authentication mode method {1:x4}",
+ die.GetOffset(), authentication_mode_int);
+ }
+ auto ptr_auth = clang::PointerAuthQualifier::Create(
+ key, addr_disc, extra, authentication_mode, isapointer,
+ authenticates_null_values);
+ return TypePayloadClang(ptr_auth.getAsOpaqueValue());
+}
+
lldb::TypeSP
DWARFASTParserClang::ParseTypeModifier(const SymbolContext &sc,
const DWARFDIE &die,
@@ -580,6 +613,7 @@ DWARFASTParserClang::ParseTypeModifier(const SymbolContext &sc,
LanguageType cu_language = SymbolFileDWARF::GetLanguage(*die.GetCU());
Type::ResolveState resolve_state = Type::ResolveState::Unresolved;
Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
+ TypePayloadClang payload(GetOwningClangModule(die));
TypeSP type_sp;
CompilerType clang_type;
@@ -677,6 +711,10 @@ DWARFASTParserClang::ParseTypeModifier(const SymbolContext &sc,
case DW_TAG_volatile_type:
encoding_data_type = Type::eEncodingIsVolatileUID;
break;
+ case DW_TAG_LLVM_ptrauth_type:
+ encoding_data_type = Type::eEncodingIsLLVMPtrAuthUID;
+ payload = GetPtrAuthMofidierPayload(die);
+ break;
case DW_TAG_atomic_type:
encoding_data_type = Type::eEncodingIsAtomicUID;
break;
@@ -786,8 +824,7 @@ DWARFASTParserClang::ParseTypeModifier(const SymbolContext &sc,
type_sp = dwarf->MakeType(die.GetID(), attrs.name, attrs.byte_size, nullptr,
attrs.type.Reference().GetID(), encoding_data_type,
- &attrs.decl, clang_type, resolve_state,
- TypePayloadClang(GetOwningClangModule(die)));
+ &attrs.decl, clang_type, resolve_state, payload);
dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
return type_sp;
diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
index ec005ac46b34f3..3bdb288e97dd6a 100644
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
@@ -2923,6 +2923,35 @@ bool TypeSystemClang::IsCStringType(lldb::opaque_compiler_type_t type,
return false;
}
+unsigned TypeSystemClang::GetPtrAuthKey(lldb::opaque_compiler_type_t type) {
+ if (type) {
+ clang::QualType qual_type(GetCanonicalQualType(type));
+ if (auto pointer_auth = qual_type.getPointerAuth())
+ return pointer_auth.getKey();
+ }
+ return 0;
+}
+
+unsigned
+TypeSystemClang::GetPtrAuthDiscriminator(lldb::opaque_compiler_type_t type) {
+ if (type) {
+ clang::QualType qual_type(GetCanonicalQualType(type));
+ if (auto pointer_auth = qual_type.getPointerAuth())
+ return pointer_auth.getExtraDiscriminator();
+ }
+ return 0;
+}
+
+bool TypeSystemClang::GetPtrAuthAddressDiversity(
+ lldb::opaque_compiler_type_t type) {
+ if (type) {
+ clang::QualType qual_type(GetCanonicalQualType(type));
+ if (auto pointer_auth = qual_type.getPointerAuth())
+ return pointer_auth.isAddressDiscriminated();
+ }
+ return false;
+}
+
bool TypeSystemClang::IsFunctionType(lldb::opaque_compiler_type_t type) {
auto isFunctionType = [&](clang::QualType qual_type) {
return qual_type->isFunctionType();
@@ -4511,6 +4540,19 @@ TypeSystemClang::AddConstModifier(lldb::opaque_compiler_type_t type) {
return CompilerType();
}
+CompilerType
+TypeSystemClang::AddPtrAuthModifier(lldb::opaque_compiler_type_t type,
+ uint32_t payload) {
+ if (type) {
+ clang::ASTContext &clang_ast = getASTContext();
+ auto pauth = PointerAuthQualifier::fromOpaqueValue(payload);
+ clang::QualType result =
+ clang_ast.getPointerAuthType(GetQualType(type), pauth);
+ return GetType(result);
+ }
+ return CompilerType();
+}
+
CompilerType
TypeSystemClang::AddVolatileModifier(lldb::opaque_compiler_type_t type) {
if (type) {
diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h
index 8a7d45254bcf52..59ca69622d9e82 100644
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h
@@ -67,11 +67,13 @@ class OptionalClangModuleID {
/// The implementation of lldb::Type's m_payload field for TypeSystemClang.
class TypePayloadClang {
- /// The Layout is as follows:
+ /// The payload is used for typedefs and ptrauth types.
+ /// For typedefs, the Layout is as follows:
/// \verbatim
/// bit 0..30 ... Owning Module ID.
/// bit 31 ...... IsCompleteObjCClass.
/// \endverbatim
+ /// For ptrauth types, we store the PointerAuthQualifier as an opaque value.
Type::Payload m_payload = 0;
public:
@@ -653,6 +655,10 @@ class TypeSystemClang : public TypeSystem {
bool IsFloatingPointType(lldb::opaque_compiler_type_t type, uint32_t &count,
bool &is_complex) override;
+ unsigned GetPtrAuthKey(lldb::opaque_compiler_type_t type) override;
+ unsigned GetPtrAuthDiscriminator(lldb::opaque_compiler_type_t type) override;
+ bool GetPtrAuthAddressDiversity(lldb::opaque_compiler_type_t type) override;
+
bool IsFunctionType(lldb::opaque_compiler_type_t type) override;
uint32_t IsHomogeneousAggregate(lldb::opaque_compiler_type_t type,
@@ -793,6 +799,9 @@ class TypeSystemClang : public TypeSystem {
CompilerType AddConstModifier(lldb::opaque_compiler_type_t type) override;
+ CompilerType AddPtrAuthModifier(lldb::opaque_compiler_type_t type,
+ uint32_t payload) override;
+
CompilerType AddVolatileModifier(lldb::opaque_compiler_type_t type) override;
CompilerType AddRestrictModifier(lldb::opaque_compiler_type_t type) override;
diff --git a/lldb/source/Symbol/CompilerType.cpp b/lldb/source/Symbol/CompilerType.cpp
index 9523fb6ea77c20..072dbccec44fba 100644
--- a/lldb/source/Symbol/CompilerType.cpp
+++ b/lldb/source/Symbol/CompilerType.cpp
@@ -108,6 +108,27 @@ bool CompilerType::IsConst() const {
return false;
}
+unsigned CompilerType::GetPtrAuthKey() const {
+ if (IsValid())
+ if (auto type_system_sp = GetTypeSystem())
+ return type_system_sp->GetPtrAuthKey(m_type);
+ return 0;
+}
+
+unsigned CompilerType::GetPtrAuthDiscriminator() const {
+ if (IsValid())
+ if (auto type_system_sp = GetTypeSystem())
+ return type_system_sp->GetPtrAuthDiscriminator(m_type);
+ return 0;
+}
+
+bool CompilerType::GetPtrAuthAddressDiversity() const {
+ if (IsValid())
+ if (auto type_system_sp = GetTypeSystem())
+ return type_system_sp->GetPtrAuthAddressDiversity(m_type);
+ return false;
+}
+
bool CompilerType::IsFunctionType() const {
if (IsValid())
if (auto type_system_sp = GetTypeSystem())
@@ -664,6 +685,13 @@ CompilerType CompilerType::GetPointerType() const {
return CompilerType();
}
+CompilerType CompilerType::AddPtrAuthModifier(uint32_t payload) const {
+ if (IsValid())
+ if (auto type_system_sp = GetTypeSystem())
+ return type_system_sp->AddPtrAuthModifier(m_type, payload);
+ return CompilerType();
+}
+
CompilerType CompilerType::GetLValueReferenceType() const {
if (IsValid())
if (auto type_system_sp = GetTypeSystem())
diff --git a/lldb/source/Symbol/Type.cpp b/lldb/source/Symbol/Type.cpp
index dcfd1238f6d789..b85c38097ebe28 100644
--- a/lldb/source/Symbol/Type.cpp
+++ b/lldb/source/Symbol/Type.cpp
@@ -355,6 +355,9 @@ void Type::GetDescription(Stream *s, lldb::DescriptionLevel level,
case eEncodingIsSyntheticUID:
s->PutCString(" (synthetic type)");
break;
+ case eEncodingIsLLVMPtrAuthUID:
+ s->PutCString(" (ptrauth type)");
+ break;
}
}
}
@@ -416,6 +419,8 @@ void Type::Dump(Stream *s, bool show_context, lldb::DescriptionLevel level) {
case eEncodingIsSyntheticUID:
s->PutCString(" (synthetic type)");
break;
+ case eEncodingIsLLVMPtrAuthUID:
+ s->PutCString(" (ptrauth type)");
}
}
@@ -477,7 +482,8 @@ std::optional<uint64_t> Type::GetByteSize(ExecutionContextScope *exe_scope) {
// If we are a pointer or reference, then this is just a pointer size;
case eEncodingIsPointerUID:
case eEncodingIsLValueReferenceUID:
- case eEncodingIsRValueReferenceUID: {
+ case eEncodingIsRValueReferenceUID:
+ case eEncodingIsLLVMPtrAuthUID: {
if (ArchSpec arch = m_symbol_file->GetObjectFile()->GetArchitecture()) {
m_byte_size = arch.GetAddressByteSize();
m_byte_size_has_value = true;
@@ -621,6 +627,12 @@ bool Type::ResolveCompilerType(ResolveState compiler_type_resolve_state) {
encoding_type->GetForwardCompilerType().GetRValueReferenceType();
break;
+ case eEncodingIsLLVMPtrAuthUID:
+ m_compiler_type =
+ encoding_type->GetForwardCompilerType().AddPtrAuthModifier(
+ m_payload);
+ break;
+
default:
llvm_unreachable("Unhandled encoding_data_type.");
}
@@ -676,6 +688,10 @@ bool Type::ResolveCompilerType(ResolveState compiler_type_resolve_state) {
m_compiler_type = void_compiler_type.GetRValueReferenceType();
break;
+ case eEncodingIsLLVMPtrAuthUID:
+ llvm_unreachable("Cannot handle eEncodingIsLLVMPtrAuthUID without "
+ "valid encoding_type");
+
default:
llvm_unreachable("Unhandled encoding_data_type.");
}
diff --git a/lldb/source/Symbol/TypeSystem.cpp b/lldb/source/Symbol/TypeSystem.cpp
index 59b1b39e635ac5..3665771b188906 100644
--- a/lldb/source/Symbol/TypeSystem.cpp
+++ b/lldb/source/Symbol/TypeSystem.cpp
@@ -93,6 +93,11 @@ CompilerType TypeSystem::AddConstModifier(lldb::opaque_compiler_type_t type) {
return CompilerType();
}
+CompilerType TypeSystem::AddPtrAuthModifier(lldb::opaque_compiler_type_t type,
+ uint32_t payload) {
+ return CompilerType();
+}
+
CompilerType
TypeSystem::AddVolatileModifier(lldb::opaque_compiler_type_t type) {
return CompilerType();
diff --git a/lldb/unittests/SymbolFile/DWARF/DWARFASTParserClangTests.cpp b/lldb/unittests/SymbolFile/DWARF/DWARFASTParserClangTests.cpp
index 0c2a0d735dc837..f7a4b8f1ac59be 100644
--- a/lldb/unittests/SymbolFile/DWARF/DWARFASTParserClangTests.cpp
+++ b/lldb/unittests/SymbolFile/DWARF/DWARFASTParserClangTests.cpp
@@ -287,6 +287,141 @@ TEST_F(DWARFASTParserClangTests, TestCallingConventionParsing) {
ASSERT_EQ(found_function_types, expected_function_types);
}
+TEST_F(DWARFASTParserClangTests, TestPtrAuthParsing) {
+ // Tests parsing values with type DW_TAG_LLVM_ptrauth_type corresponding to
+ // explicitly signed raw function pointers
+
+ // This is Dwarf for the following C code:
+ // ```
+ // void (*__ptrauth(0, 0, 42) a)();
+ // ```
+
+ const char *yamldata = R"(
+--- !ELF
+FileHeader:
+ Class: ELFCLASS64
+ Data: ELFDATA2LSB
+ Type: ET_EXEC
+ Machine: EM_AARCH64
+DWARF:
+ debug_str:
+ - a
+ debug_abbrev:
+ - ID: 0
+ Table:
+ - Code: 0x01
+ Tag: DW_TAG_compile_unit
+ Children: DW_CHILDREN_yes
+ Attributes:
+ - Attribute: DW_AT_language
+ Form: DW_FORM_data2
+ - Code: 0x02
+ Tag: DW_TAG_variable
+ Children: DW_CHILDREN_no
+ Attributes:
+ - Attribute: DW_AT_name
+ Form: DW_FORM_strp
+ - Attribute: DW_AT_type
+ Form: DW_FORM_ref4
+ - Attribute: DW_AT_external
+ Form: DW_FORM_flag_present
+ - Code: 0x03
+ Tag: DW_TAG_LLVM_ptrauth_type
+ Children: DW_CHILDREN_no
+ Attributes:
+ - Attribute: DW_AT_type
+ Form: DW_FORM_ref4
+ - Attribute: DW_AT_LLVM_ptrauth_key
+ Form: DW_FORM_data1
+ - Attribute: DW_AT_LLVM_ptrauth_extra_discriminator
+ Form: DW_FORM_data2
+ - Code: 0x04
+ Tag: DW_TAG_pointer_type
+ Children: DW_CHILDREN_no
+ Attributes:
+ - Attribute: DW_AT_type
+ Form: DW_FORM_ref4
+ - Code: 0x05
+ Tag: DW_TAG_subroutine_type
+ Children: DW_CHILDREN_yes
+ - Code: 0x06
+ Tag: DW_TAG_unspecified_parameters
+ Children: DW_CHILDREN_no
+
+ debug_info:
+ - Version: 5
+ UnitType: DW_UT_compile
+ AddrSize: 8
+ Entries:
+# 0x0c: DW_TAG_compile_unit
+# DW_AT_language [DW_FORM_data2] (DW_LANG_C99)
+ - AbbrCode: 0x01
+ Values:
+ - Value: 0x0c
+
+# 0x0f: DW_TAG_variable
+# DW_AT_name [DW_FORM_strp] (\"a\")
+# DW_AT_type [DW_FORM_ref4] (0x00000018 \"void (*__ptrauth(0, 0, 0x02a)\")
+# DW_AT_external [DW_FORM_flag_present] (true)
+ - AbbrCode: 0x02
+ Values:
+ - Value: 0x00
+ - Value: 0x18
+
+# 0x18: DW_TAG_LLVM_ptrauth_type
+# DW_AT_type [DW_FORM_ref4] (0x00000020 \"void (*)(...)\")
+# DW_AT_LLVM_ptrauth_key [DW_FORM_data1] (0x00)
+# DW_AT_LLVM_ptrauth_extra_discriminator [DW_FORM_data2] (0x002a)
+ - AbbrCode: 0x03
+ Values:
+ - Value: 0x20
+ - Value: 0x00
+ - Value: 0x2a
+
+# 0x20: DW_TAG_pointer_type
+# DW_AT_type [DW_AT_type [DW_FORM_ref4] (0x00000025 \"void (...)\")
+ - AbbrCode: 0x04
+ Values:
+ - Value: 0x25
+
+# 0x25: DW_TAG_subroutine_type
+ - AbbrCode: 0x05
+
+# 0x26: DW_TAG_unspecified_parameters
+ - AbbrCode: 0x06
+
+ - AbbrCode: 0x00 # end of child tags of 0x25
+ - AbbrCode: 0x00 # end of child tags of 0x0c
+...
+)";
+ YAMLModuleTester t(yamldata);
+
+ DWARFUnit *unit = t.GetDwarfUnit();
+ ASSERT_NE(unit, nullptr);
+ const DWARFDebugInfoEntry *cu_entry = unit->DIE().GetDIE();
+ ASSERT_EQ(cu_entry->Tag(), DW_TAG_compile_unit);
+ DWARFDIE cu_die(unit, cu_entry);
+
+ auto holder = std::make_unique<clang_utils::TypeSystemClangHolder>("ast");
+ auto &ast_ctx = *holder->GetAST();
+ DWARFASTParserClangStub ast_parser(ast_ctx);
+
+ DWARFDIE ptrauth_variable = cu_die.GetFirstChild();
+ ASSERT_EQ(ptrauth_variable.Tag(), DW_TAG_variable);
+ DWARFDIE ptrauth_type =
+ ptrauth_variable.GetAttributeValueAsReferenceDIE(DW_AT_type);
+ ASSERT_EQ(ptrauth_type.Tag(), DW_TAG_LLVM_ptrauth_type);
+
+ SymbolContext sc;
+ bool new_type = false;
+ lldb::TypeSP type_sp =
+ ast_parser.ParseTypeFromDWARF(sc, ptrauth_type, &new_type);
+ CompilerType compiler_type = type_sp->GetForwardCompilerType();
+ ASSERT_EQ(compiler_type.GetPtrAuthKey(), 0);
+ ASSERT_EQ(compiler_type.GetPtrAuthAddressDiversity(), false);
+ ASSERT_EQ(compiler_type.GetPtrAuthDiscriminator(), 42);
+}
+
struct ExtractIntFromFormValueTest : public testing::Test {
SubsystemRAII<FileSystem, HostInfo> subsystems;
clang_utils::TypeSystemClangHolder holder;
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