Open
Description
Open the following C file in an editor with clangd enabled.
res = FOO(bar,baz,,);Hovering on res leads to a crash. The stack dump is as follows
#0 0x6afe8d3 in (anonymous namespace)::StmtPrinter::VisitCharacterLiteral(clang::CharacterLiteral*) /src/clang/lib/AST/StmtPrinter.cpp:1399:62
#1 0x6afe8d3 in clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::StmtPrinter, void>::Visit(clang::Stmt*) /src/build/tools/clang/include/clang/AST/StmtNodes.inc:524:1
#2 0x6b4b8e4 in (anonymous namespace)::StmtPrinter::Visit(clang::Stmt*) /src/clang/lib/AST/StmtPrinter.cpp:150:38
#3 0x6b4b8e4 in (anonymous namespace)::StmtPrinter::PrintExpr(clang::Expr*) /src/clang/lib/AST/StmtPrinter.cpp:136:9
#4 0x6b4b8e4 in (anonymous namespace)::StmtPrinter::PrintCallArgs(clang::CallExpr*) /src/clang/lib/AST/StmtPrinter.cpp:1700:5
#5 0x6b1a57e in (anonymous namespace)::StmtPrinter::VisitCallExpr(clang::CallExpr*) /src/clang/lib/AST/StmtPrinter.cpp:1707:3
#6 0x6b03f8c in (anonymous namespace)::StmtPrinter::Visit(clang::Stmt*) /src/clang/lib/AST/StmtPrinter.cpp:150:38
#7 0x6b03f8c in (anonymous namespace)::StmtPrinter::PrintExpr(clang::Expr*) /src/clang/lib/AST/StmtPrinter.cpp:136:9
#8 0x6b03f8c in (anonymous namespace)::StmtPrinter::VisitRecoveryExpr(clang::RecoveryExpr*) /src/clang/lib/AST/StmtPrinter.cpp:2882:5
#9 0x6afd7e9 in (anonymous namespace)::StmtPrinter::Visit(clang::Stmt*) /src/clang/lib/AST/StmtPrinter.cpp:150:38
#10 0x6afd7e9 in clang::Stmt::printPretty(llvm::raw_ostream&, clang::PrinterHelper*, clang::PrintingPolicy const&, unsigned int, llvm::StringRef, clang::ASTContext const*) const /src/clang/lib/AST/StmtPrinter.cpp:2912:5
#11 0x61f8e48 in (anonymous namespace)::DeclPrinter::VisitVarDecl(clang::VarDecl*) /src/clang/lib/AST/DeclPrinter.cpp:997:13
#12 0x62075ab in clang::Decl::print(llvm::raw_ostream&, clang::PrintingPolicy const&, unsigned int, bool) const /src/clang/lib/AST/DeclPrinter.cpp:139:11
#13 0x8ccd110 in clang::clangd::(anonymous namespace)::printDefinition[abi:cxx11](clang::Decl const*, clang::PrintingPolicy, clang::syntax::TokenBuffer const&) /src/clang-tools-extra/clangd/Hover.cpp:152:6
#14 0x8ccd110 in clang::clangd::(anonymous namespace)::getHoverContents(clang::NamedDecl const*, clang::PrintingPolicy const&, clang::clangd::SymbolIndex const*, clang::syntax::TokenBuffer const&) /src/clang-tools-extra/clangd/Hover.cpp:674:19
#15 0x8ccd110 in clang::clangd::getHover(clang::clangd::ParsedAST&, clang::clangd::Position, clang::format::FormatStyle const&, clang::clangd::SymbolIndex const*) /src/clang-tools-extra/clangd/Hover.cpp:1367:14
#16 0x8a5a6b3 in clang::clangd::ClangdServer::findHover(llvm::StringRef, clang::clangd::Position, llvm::unique_function<void (llvm::Expected<std::optional<clang::clangd::HoverInfo>>)>)::$_0::operator()(llvm::Expected<clang::clangd::InputsAndAST>) /src/clang-tools-extra/clangd/ClangdServer.cpp:841:8
#17 0x8a5a6b3 in void llvm::detail::UniqueFunctionBase<void, llvm::Expected<clang::clangd::InputsAndAST>>::CallImpl<clang::clangd::ClangdServer::findHover(llvm::StringRef, clang::clangd::Position, llvm::unique_function<void (llvm::Expected<std::optional<clang::clangd::HoverInfo>>)>)::$_0>(void*, llvm::Expected<clang::clangd::InputsAndAST>&) /src/llvm/include/llvm/ADT/FunctionExtras.h:222:12
#18 0x8f98ef2 in llvm::unique_function<void (llvm::Expected<clang::clangd::InputsAndAST>)>::operator()(llvm::Expected<clang::clangd::InputsAndAST>) /src/llvm/include/llvm/ADT/FunctionExtras.h:387:12
#19 0x8f98ef2 in clang::clangd::(anonymous namespace)::ASTWorker::runWithAST(llvm::StringRef, llvm::unique_function<void (llvm::Expected<clang::clangd::InputsAndAST>)>, clang::clangd::TUScheduler::ASTActionInvalidation)::$_0::operator()() /src/clang-tools-extra/clangd/TUScheduler.cpp:1013:5
#20 0x8f98ef2 in void llvm::detail::UniqueFunctionBase<void>::CallImpl<clang::clangd::(anonymous namespace)::ASTWorker::runWithAST(llvm::StringRef, llvm::unique_function<void (llvm::Expected<clang::clangd::InputsAndAST>)>, clang::clangd::TUScheduler::ASTActionInvalidation)::$_0>(void*) /src/llvm/include/llvm/ADT/FunctionExtras.h:222:12
#21 0x8fa6e9f in llvm::function_ref<void ()>::operator()() const /src/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:12
#22 0x8fa6e9f in clang::clangd::(anonymous namespace)::ASTWorker::runTask(llvm::StringRef, llvm::function_ref<void ()>) /src/clang-tools-extra/clangd/TUScheduler.cpp:1328:3
#23 0x8fb0e10 in clang::clangd::(anonymous namespace)::ASTWorker::run() /src/clang-tools-extra/clangd/TUScheduler.cpp:1462:7
#24 0x8fb0e10 in clang::clangd::(anonymous namespace)::ASTWorker::create(llvm::StringRef, clang::clangd::GlobalCompilationDatabase const&, clang::clangd::TUScheduler::ASTCache&, clang::clangd::TUScheduler::HeaderIncluderCache&, clang::clangd::AsyncTaskRunner*, clang::clangd::Semaphore&, clang::clangd::TUScheduler::Options const&, clang::clangd::ParsingCallbacks&)::$_0::operator()() const /src/clang-tools-extra/clangd/TUScheduler.cpp:826:42
#25 0x8fb0e10 in void llvm::detail::UniqueFunctionBase<void>::CallImpl<clang::clangd::(anonymous namespace)::ASTWorker::create(llvm::StringRef, clang::clangd::GlobalCompilationDatabase const&, clang::clangd::TUScheduler::ASTCache&, clang::clangd::TUScheduler::HeaderIncluderCache&, clang::clangd::AsyncTaskRunner*, clang::clangd::Semaphore&, clang::clangd::TUScheduler::Options const&, clang::clangd::ParsingCallbacks&)::$_0>(void*) /src/llvm/include/llvm/ADT/FunctionExtras.h:222:12
#26 0x92faab4 in llvm::unique_function<void ()>::operator()() /src/llvm/include/llvm/ADT/FunctionExtras.h:387:12
#27 0x92faab4 in clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1::operator()() /src/clang-tools-extra/clangd/support/Threading.cpp:101:5
#28 0x92faab4 in auto void llvm::thread::GenericThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>>(void*)::'lambda'(auto&&, auto&&...)::operator()<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1&>(auto&&, auto&&...) const /src/llvm/include/llvm/Support/thread.h:43:11
#29 0x92faab4 in auto std::__invoke_impl<void, void llvm::thread::GenericThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>>(void*)::'lambda'(auto&&, auto&&...), clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1&>(std::__invoke_other, void llvm::thread::GenericThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>>(void*)::'lambda'(auto&&, auto&&...)&&, clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1&) /opt/rh/gcc-toolset-13/root/usr/lib/gcc/x86_64-redhat-linux/13/../../../../include/c++/13/bits/invoke.h:61:14
#30 0x92faab4 in std::__invoke_result<auto, auto...>::type std::__invoke<void llvm::thread::GenericThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>>(void*)::'lambda'(auto&&, auto&&...), clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1&>(auto&&, auto&&...) /opt/rh/gcc-toolset-13/root/usr/lib/gcc/x86_64-redhat-linux/13/../../../../include/c++/13/bits/invoke.h:96:14
#31 0x92faab4 in decltype(auto) std::__apply_impl<void llvm::thread::GenericThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>>(void*)::'lambda'(auto&&, auto&&...), std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>&, 0ul>(auto&&, std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>&, std::integer_sequence<unsigned long, 0ul>) /opt/rh/gcc-toolset-13/root/usr/lib/gcc/x86_64-redhat-linux/13/../../../../include/c++/13/tuple:2302:14
#32 0x92faab4 in decltype(auto) std::apply<void llvm::thread::GenericThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>>(void*)::'lambda'(auto&&, auto&&...), std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>&>(auto&&, std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>&) /opt/rh/gcc-toolset-13/root/usr/lib/gcc/x86_64-redhat-linux/13/../../../../include/c++/13/tuple:2313:14
#33 0x92faab4 in void llvm::thread::GenericThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>>(void*) /src/llvm/include/llvm/Support/thread.h:41:5
#34 0x92faab4 in void* llvm::thread::ThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1>>(void*) /src/llvm/include/llvm/Support/thread.h:55:5
#35 0x58765dc in asan_thread_start(void*) crtstuff.c
#36 0x7f876b9bd7e1 in start_thread (/lib64/libc.so.6+0x897e1) (BuildId: 7a40a22c9a82854f3d66767232ae364a99174860)
#37 0x7f876ba427ff in __GI___clone3 (/lib64/libc.so.6+0x10e7ff) (BuildId: 7a40a22c9a82854f3d66767232ae364a99174860)