hctim added a comment. Hey folks, looks like this caused a failure on the msan buildbot: https://lab.llvm.org/buildbot/#/builders/237/builds/785
It's been had a long-running bug that I'm still tracking down but seems like this is a new failure caused by this patch. The track-origins log is copied below for your convenience. The bot can be reproduced by following the instructions at https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild, you'd want to substitute `buildbot_fast.sh` for `buildbot_bootstrap_msan.sh` though. Given the bot is already red when this was committed, please ignore any failures other than this one. ==3442210==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0xaaaaf388495c in (anonymous namespace)::CXXNameMangler::mangleUnqualifiedName(clang::GlobalDecl, clang::DeclarationName, clang::DeclContext const*, unsigned int, llvm::SmallVector<llvm::StringRef, 4u> const*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp:1631:9 #1 0xaaaaf389ab8c in mangleUnqualifiedName /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp:501:5 #2 0xaaaaf389ab8c in (anonymous namespace)::CXXNameMangler::mangleNestedName(clang::GlobalDecl, clang::DeclContext const*, llvm::SmallVector<llvm::StringRef, 4u> const*, bool) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp:1735:5 #3 0xaaaaf3847b20 in (anonymous namespace)::CXXNameMangler::mangleFunctionEncoding(clang::GlobalDecl) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp:811:5 #4 0xaaaaf38985fc in (anonymous namespace)::CXXNameMangler::mangleLocalName(clang::GlobalDecl, llvm::SmallVector<llvm::StringRef, 4u> const*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp:1806:7 #5 0xaaaaf3897d00 in (anonymous namespace)::CXXNameMangler::mangleType(clang::TagType const*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp:3468:3 #6 0xaaaaf384e184 in (anonymous namespace)::CXXNameMangler::mangleType(clang::QualType) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp #7 0xaaaaf384106c in (anonymous namespace)::ItaniumMangleContextImpl::mangleCXXRTTIName(clang::QualType, llvm::raw_ostream&, bool) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp:6626:11 #8 0xaaaaeb77c768 in clang::CodeGen::CodeGenTBAA::getBaseTypeInfoHelper(clang::Type const*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenTBAA.cpp:394:16 #9 0xaaaaeb777978 in getBaseTypeInfo /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenTBAA.cpp:427:28 #10 0xaaaaeb777978 in clang::CodeGen::CodeGenTBAA::getTypeInfo(clang::QualType) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenTBAA.cpp:242:12 #11 0xaaaaeb779184 in clang::CodeGen::CodeGenTBAA::getAccessInfo(clang::QualType) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenTBAA.cpp:265:25 #12 0xaaaaeb0c2cfc in MakeAddrLValue /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenFunction.h:2494:33 #13 0xaaaaeb0c2cfc in (anonymous namespace)::AggExprEmitter::VisitLambdaExpr(clang::LambdaExpr*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExprAgg.cpp:1350:23 #14 0xaaaaeb0ab220 in Visit /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExprAgg.cpp:108:34 #15 0xaaaaeb0ab220 in clang::CodeGen::CodeGenFunction::EmitAggExpr(clang::Expr const*, clang::CodeGen::AggValueSlot) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExprAgg.cpp:2038:49 #16 0xaaaaea90e15c in clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, clang::CodeGen::AggValueSlot, bool) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExpr.cpp:224:5 #17 0xaaaaea910c80 in clang::CodeGen::CodeGenFunction::EmitAnyExprToTemp(clang::Expr const*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExpr.cpp:237:10 #18 0xaaaaeac28f4c in clang::CodeGen::CodeGenFunction::EmitCallArg(clang::CodeGen::CallArgList&, clang::Expr const*, clang::QualType) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGCall.cpp:4461:12 #19 0xaaaaeac25c34 in clang::CodeGen::CodeGenFunction::EmitCallArgs(clang::CodeGen::CallArgList&, clang::CodeGen::CodeGenFunction::PrototypeWrapper, llvm::iterator_range<clang::Stmt::CastIterator<clang::Expr, clang::Expr const* const, clang::Stmt const* const>>, clang::CodeGen::CodeGenFunction::AbstractCallee, unsigned int, clang::CodeGen::CodeGenFunction::EvaluationOrder) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGCall.cpp:4308:5 #20 0xaaaaea9733d0 in clang::CodeGen::CodeGenFunction::EmitCall(clang::QualType, clang::CodeGen::CGCallee const&, clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::Value*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExpr.cpp:5435:3 #21 0xaaaaea970394 in clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExpr.cpp:4999:10 #22 0xaaaaeacbeb28 in (anonymous namespace)::ScalarExprEmitter::VisitCallExpr(clang::CallExpr const*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExprScalar.cpp:580:20 #23 0xaaaaeac88628 in Visit /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExprScalar.cpp:407:52 #24 0xaaaaeac88628 in clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExprScalar.cpp:5044:8 #25 0xaaaaea90d7ac in clang::CodeGen::CodeGenFunction::EvaluateExprAsBool(clang::Expr const*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGExpr.cpp:183:33 #26 0xaaaaea9a2dc0 in clang::CodeGen::CodeGenFunction::EmitBranchOnBoolExpr(clang::Expr const*, llvm::BasicBlock*, llvm::BasicBlock*, unsigned long, clang::Stmt::Likelihood) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenFunction.cpp:1883:13 #27 0xaaaaea9d3f04 in clang::CodeGen::CodeGenFunction::EmitIfStmt(clang::IfStmt const&) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGStmt.cpp:833:3 #28 0xaaaaea9d2888 in EmitCompoundStmtWithoutScope /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGStmt.cpp:535:7 #29 0xaaaaea9d2888 in EmitCompoundStmt /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGStmt.cpp:486:10 #30 0xaaaaea9d2888 in clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGStmt.cpp:442:5 #31 0xaaaaea9d0c74 in clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGStmt.cpp:59:7 #32 0xaaaaeac5614c in clang::CodeGen::CodeGenFunction::EmitConstructorBody(clang::CodeGen::FunctionArgList&) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGClass.cpp #33 0xaaaaea99f2c8 in clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenFunction.cpp:1439:5 #34 0xaaaaeb174904 in clang::CodeGen::CodeGenModule::codegenCXXStructor(clang::GlobalDecl) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CGCXX.cpp:215:26 #35 0xaaaaea8a2024 in (anonymous namespace)::ItaniumCXXABI::emitCXXStructor(clang::GlobalDecl) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/ItaniumCXXABI.cpp:4375:28 #36 0xaaaaea7893f8 in clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:3638:14 #37 0xaaaaea759064 in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2808:5 #38 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #39 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #40 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #41 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #42 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #43 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #44 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #45 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #46 0xaaaaea7590dc in clang::CodeGen::CodeGenModule::EmitDeferred() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:7 #47 0xaaaaea751844 in clang::CodeGen::CodeGenModule::Release() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:515:3 #48 0xaaaaec54f928 in (anonymous namespace)::CodeGeneratorImpl::HandleTranslationUnit(clang::ASTContext&) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/ModuleBuilder.cpp:287:18 #49 0xaaaaec545b40 in clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/CodeGen/CodeGenAction.cpp:308:14 #50 0xaaaaf0528bb4 in clang::ParseAST(clang::Sema&, bool, bool) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseAST.cpp:196:13 #51 0xaaaaec265424 in clang::FrontendAction::Execute() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1058:8 #52 0xaaaaec0b940c in clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:1046:33 #53 0xaaaaec52f63c in clang::ExecuteCompilerInvocation(clang::CompilerInstance*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:264:25 #54 0xaaaae2356ecc in cc1_main(llvm::ArrayRef<char const*>, char const*, void*) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/tools/driver/cc1_main.cpp:251:15 #55 0xaaaae23486dc in ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/tools/driver/driver.cpp:360:12 #56 0xaaaaebcb7740 in operator() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/Driver/Job.cpp:428:34 #57 0xaaaaebcb7740 in void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::__1::optional<llvm::StringRef>>, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>*, bool*) const::$_0>(long) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:45:12 #58 0xaaaae9ad4730 in operator() /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:68:12 #59 0xaaaae9ad4730 in llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/CrashRecoveryContext.cpp:426:3 #60 0xaaaaebcb51ac in clang::driver::CC1Command::Execute(llvm::ArrayRef<std::__1::optional<llvm::StringRef>>, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>*, bool*) const /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/Driver/Job.cpp:428:12 #61 0xaaaaebbf7d68 in clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/Driver/Compilation.cpp:199:15 #62 0xaaaaebbf8a60 in clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::__1::pair<int, clang::driver::Command const*>>&, bool) const /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/Driver/Compilation.cpp:253:19 #63 0xaaaaebc4edcc in clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::__1::pair<int, clang::driver::Command const*>>&) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/Driver/Driver.cpp:1853:5 #64 0xaaaae234449c in clang_main(int, char**) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/tools/driver/driver.cpp:562:21 #65 0xffff861a73f8 (/lib/aarch64-linux-gnu/libc.so.6+0x273f8) (BuildId: f37f3aa07c797e333fd106472898d361f71798f5) #66 0xffff861a74c8 in __libc_start_main (/lib/aarch64-linux-gnu/libc.so.6+0x274c8) (BuildId: f37f3aa07c797e333fd106472898d361f71798f5) #67 0xaaaae22b4a2c in _start (/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/clang-17+0x5934a2c) Uninitialized value was created by an allocation of 'Mangler' in the stack frame #0 0xaaaaf3840e88 in (anonymous namespace)::ItaniumMangleContextImpl::mangleCXXRTTIName(clang::QualType, llvm::raw_ostream&, bool) /b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/clang/lib/AST/ItaniumMangle.cpp:6624:3 Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D139395/new/ https://reviews.llvm.org/D139395 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits