Segfault with absl::StatusOr

[b3334c15-e039-41ea-920e-01bc7f410019]

Bugzilla Link	52048
Version	12.0
OS	MacOS X
CC	@JDevlieghere

Extended Description

LLDB consistently segfaults when calling status() on absl::StatusOr in my codebase, but I have been unable to come with a minimal repro case. The code is in a private Github repo, but I'm happy to give access to whomever and provide specific repro instructions and commit ref.

Here's the output:

(lldb) target create "build-debug/src/timeline_test" Current executable set to '/Users/adam/SpacePhysics/physics/build-debug/src/timeline_test' (x86_64). (lldb) r Process 3352 launched: '/Users/adam/SpacePhysics/physics/build-debug/src/timeline_test' (x86_64) Running main() from /Users/adam/SpacePhysics/physics/build-debug/_deps/googletest-src/googletest/src/gtest_main.cc [==========] Running 9 tests from 2 test suites. [----------] Global test environment set-up. [----------] 5 tests from TimelineTest [ RUN ] TimelineTest.FallingSphere [ OK ] TimelineTest.FallingSphere (1040 ms) [ RUN ] TimelineTest.AccelerateRewindAccelerate [ OK ] TimelineTest.AccelerateRewindAccelerate (2 ms) [ RUN ] TimelineTest.TimeTravel Assertion failed: (reset_event.ok()), function Simulate, file /Users/adam/SpacePhysics/physics/src/timeline.cc, line 159. Process 3352 stopped

• thread #​1, queue = 'com.apple.main-thread', stop reason = hit program assert frame #​4: 0x000000010004e7dd timelinetest`vstr::Timeline::Simulate(this=0x00007ffeefbfec68) at timeline.cc:159:3 156 events.Overlap(head_, inputbuffer); 157 auto reset_event = 158 ShouldResetTimeline(absl::MakeSpan(inputbuffer), key_frameperiod); -> 159 assert(reset_event.ok()); 160
  161 if (reset_event.value() != nullptr) { 162 headframe = keyframes[reset_event.value()->time_travel.frame_no / Target 0: (timeline_test) stopped. (lldb) p reset_event.status() PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace. Stack dump:
  0. Program arguments: /Applications/Xcode.app/Contents/Developer/usr/bin/lldb build-debug/src/timeline_test 0 lldb 0x0000000108801de5 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37 1 lldb 0x00000001088014e5 llvm::sys::RunSignalHandlers() + 85 2 lldb 0x0000000108802646 SignalHandler(int) + 262 3 libsystem_platform.dylib 0x00007fff20575d7d _sigtramp + 29 4 libsystem_platform.dylib 0x000000010fc48e00 _sigtramp + 18446603344533074080 5 LLDB 0x000000010caf3b7c clang::ASTContext::getASTRecordLayout(clang::RecordDecl const) const + 3052 6 LLDB 0x000000010cafa570 (anonymous namespace)::EmptySubobjectMap::ComputeEmptySubobjectSizes() + 400 7 LLDB 0x000000010caf34f6 clang::ASTContext::getASTRecordLayout(clang::RecordDecl const) const + 1382 8 LLDB 0x000000010cafa570 (anonymous namespace)::EmptySubobjectMap::ComputeEmptySubobjectSizes() + 400 9 LLDB 0x000000010caf34f6 clang::ASTContext::getASTRecordLayout(clang::RecordDecl const) const + 1382 10 LLDB 0x000000010b2547e1 clang::CodeGen::CodeGenTypes::ComputeRecordLayout(clang::RecordDecl const, llvm::StructType) + 97 11 LLDB 0x000000010b308be4 clang::CodeGen::CodeGenTypes::ConvertRecordDeclType(clang::RecordDecl const) + 660 12 LLDB 0x000000010b30758d clang::CodeGen::CodeGenTypes::ConvertType(clang::QualType) + 205 13 LLDB 0x000000010b307459 clang::CodeGen::CodeGenTypes::ConvertTypeForMem(clang::QualType, bool) + 121 14 LLDB 0x000000010b307a56 clang::CodeGen::CodeGenTypes::ConvertType(clang::QualType) + 1430 15 LLDB 0x000000010b37c4f7 (anonymous namespace)::X86_64ABIInfo::classifyArgumentType(clang::QualType, unsigned int, unsigned int&, unsigned int&, bool) const + 375 16 LLDB 0x000000010b379a6a (anonymous namespace)::X86_64ABIInfo::computeInfo(clang::CodeGen::CGFunctionInfo&) const + 1578 17 LLDB 0x000000010b070ef3 clang::CodeGen::CodeGenTypes::arrangeLLVMFunctionInfo(clang::CanQual, bool, bool, llvm::ArrayRef<clang::CanQual >, clang::FunctionType::ExtInfo, llvm::ArrayRef, clang::CodeGen::RequiredArgs) + 771 18 LLDB 0x000000010b0713d2 arrangeLLVMFunctionInfo(clang::CodeGen::CodeGenTypes&, bool, llvm::SmallVectorImpl<clang::CanQual >&, clang::CanQual) + 658 19 LLDB 0x000000010b0714a9 clang::CodeGen::CodeGenTypes::arrangeCXXMethodType(clang::CXXRecordDecl const, clang::FunctionProtoType const, clang::CXXMethodDecl const) + 153 20 LLDB 0x000000010b071687 clang::CodeGen::CodeGenTypes::arrangeCXXMethodDeclaration(clang::CXXMethodDecl const) + 391 21 LLDB 0x000000010b2c6f8f clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue) + 47 22 LLDB 0x000000010b2c13bf clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue) + 463 23 LLDB 0x000000010b2c9e87 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl) + 1831 24 LLDB 0x000000010b345faf (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) + 127 25 LLDB 0x00000001091c7464 lldb_private::ASTResultSynthesizer::HandleTopLevelDecl(clang::DeclGroupRef) + 148 26 LLDB 0x000000010bdf42a3 clang::ParseAST(clang::Sema&, bool, bool) + 531 27 LLDB 0x00000001091ef761 lldb_private::ClangExpressionParser::ParseInternal(lldb_private::DiagnosticManager&, clang::CodeCompleteConsumer, unsigned int, unsigned int) + 2209 28 LLDB 0x0000000109203526 lldb_private::ClangUserExpression::TryParse(lldb_private::DiagnosticManager&, lldb_private::ExecutionContextScope, lldb_private::ExecutionContext&, lldb_private::ExecutionPolicy, bool, bool) + 422 29 LLDB 0x0000000109203d47 lldb_private::ClangUserExpression::Parse(lldb_private::DiagnosticManager&, lldb_private::ExecutionContext&, lldb_private::ExecutionPolicy, bool, bool) + 1207 30 LLDB 0x0000000108bda8db lldb_private::UserExpression::Evaluate(lldb_private::ExecutionContext&, lldb_private::EvaluateExpressionOptions const&, llvm::StringRef, llvm::StringRef, std::1::shared_ptr&, lldb_private::Status&, std::__1::basic_string<char, std::1::char_traits, std::__1::allocator >, lldb_private::ValueObject) + 2427 31 LLDB 0x0000000108cdb3ec lldb_private::Target::EvaluateExpression(llvm::StringRef, lldb_private::ExecutionContextScope, std::1::shared_ptr&, lldb_private::EvaluateExpressionOptions const&, std::__1::basic_string<char, std::1::char_traits, std::1::allocator >, lldb_private::ValueObject) + 636 32 LLDB 0x000000010915b605 lldb_private::CommandObjectExpression::EvaluateExpression(llvm::StringRef, lldb_private::Stream&, lldb_private::Stream&, lldb_private::CommandReturnObject&) + 549 33 LLDB 0x000000010915c5a0 lldb_private::CommandObjectExpression::DoExecute(llvm::StringRef, lldb_private::CommandReturnObject&) + 1552 34 LLDB 0x0000000108c16672 lldb_private::CommandObjectRaw::Execute(char const, lldb_private::CommandReturnObject&) + 418 35 LLDB 0x0000000108c0cb81 lldb_private::CommandInterpreter::HandleCommand(char const, lldb_private::LazyBool, lldb_private::CommandReturnObject&, lldb_private::ExecutionContext*, bool, bool) + 2753 36 LLDB 0x0000000108c10eac lldb_private::CommandInterpreter::IOHandlerInputComplete(lldb_private::IOHandler&, std::__1::basic_string<char, std::1::char_traits, std::__1::allocator >&) + 620 37 LLDB 0x0000000108b4e4a2 lldb_private::IOHandlerEditline::Run() + 338 38 LLDB 0x0000000108b3448f lldb_private::Debugger::RunIOHandlers() + 143 39 LLDB 0x0000000108c1214e lldb_private::CommandInterpreter::RunCommandInterpreter(lldb_private::CommandInterpreterRunOptions&) + 158 40 LLDB 0x00000001088f3076 lldb::SBDebugger::RunCommandInterpreter(bool, bool) + 214 41 lldb 0x00000001087e9969 Driver::MainLoop() + 2857 42 lldb 0x00000001087eb2ce main + 1982 43 libdyld.dylib 0x00007fff2054c621 start + 1 zsh: segmentation fault lldb build-debug/src/timeline_test

[llvmbot]

Hello Adam,

I am looking at a bug similar to this.

Can you reach out to me via e-mail with the instructions and I will look into it on Monday.

Thank you

[b3334c15-e039-41ea-920e-01bc7f410019]

LLDB version:

lldb --version lldb-1205.0.28.2 Apple Swift version 5.4.2 (swiftlang-1205.0.28.2 clang-1205.0.19.57)