[Crash] clangd crash If there is an "N" in the code #84122
Labels
clang:frontend
Language frontend issues, e.g. anything involving "Sema"
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Comments
EugeneZelenko
added
clang:frontend
|
@llvm/issue-subscribers-clang-frontend Author: None (Neojan)
If there is an "N" in the code, it will cause cland crash
eg: printf("abcdefg \N");
StackTrace:
#<!-- -->0 0x000000000052eb73 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/runner/work/clangd/clangd/llvm-project/llvm/lib/Support/Unix/Signals.inc:569:13
#<!-- -->1 0x000000000052caec llvm::sys::RunSignalHandlers() /home/runner/work/clangd/clangd/llvm-project/llvm/lib/Support/Signals.cpp:104:18
#<!-- -->2 0x000000000052eee6 SignalHandler(int) /home/runner/work/clangd/clangd/llvm-project/llvm/lib/Support/Unix/Signals.inc:407:1
#<!-- -->3 0x00007f5d054f18a0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x128a0)
#<!-- -->4 0x0000000000a4fe8e clang::StringLiteralParser::init(llvm::ArrayRef<clang::Token>) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Lex/LiteralSupport.cpp:2099:24
#<!-- -->5 0x0000000000ed077e clang::Sema::ActOnStringLiteral(llvm::ArrayRef<clang::Token>, clang::Scope*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Sema/SemaExpr.cpp:1861:23
#<!-- -->6 0x0000000001dd9e1f clang::Parser::ParseStringLiteralExpression(bool) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:3218:18
#<!-- -->7 0x0000000001dd2244 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, clang::Parser::TypeCastState, bool, bool*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:1291:11
#<!-- -->8 0x0000000001dcf751 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, clang::Parser::TypeCastState, bool, bool*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:681:20
#<!-- -->9 0x0000000001dcdf2c clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:176:10
#<!-- -->10 0x0000000001ddd2ba clang::Parser::ParseExpressionList(llvm::SmallVectorImpl<clang::Expr*>&, llvm::SmallVectorImpl<clang::SourceLocation>&, llvm::function_ref<void ()>, bool, bool) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:0:0
#<!-- -->11 0x0000000001dd0656 clang::Parser::ParsePostfixExpressionSuffix(clang::ActionResult<clang::Expr*, true>) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:2058:15
#<!-- -->12 0x0000000001dd1e22 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, clang::Parser::TypeCastState, bool, bool*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:1819:9
#<!-- -->13 0x0000000001dcf751 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, clang::Parser::TypeCastState, bool, bool*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:681:20
#<!-- -->14 0x0000000001dcdf2c clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:176:10
#<!-- -->15 0x0000000001dcde69 clang::Parser::ParseExpression(clang::Parser::TypeCastState) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseExpr.cpp:125:10
#<!-- -->16 0x0000000001e30ce5 clang::Parser::ParseExprStatement(clang::Parser::ParsedStmtContext) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:509:19
#<!-- -->17 0x0000000001e2f34f clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:264:12
#<!-- -->18 0x0000000001e2ec66 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:114:20
#<!-- -->19 0x0000000001e37b81 clang::Parser::ParseCompoundStatementBody(bool) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:1157:11
#<!-- -->20 0x0000000001e2f674 ParseCompoundStatement /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:966:10
#<!-- -->21 0x0000000001e2f674 ParseCompoundStatement /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:931:10
#<!-- -->22 0x0000000001e2f674 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:279:12
#<!-- -->23 0x0000000001e2ec66 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:114:20
#<!-- -->24 0x0000000001e324aa ParseStatement /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:41:11
#<!-- -->25 0x0000000001e324aa clang::Parser::ParseIfStatement(clang::SourceLocation*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:1522:16
#<!-- -->26 0x0000000001e2f81e clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:286:12
#<!-- -->27 0x0000000001e2ec66 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:114:20
#<!-- -->28 0x0000000001e37b81 clang::Parser::ParseCompoundStatementBody(bool) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:1157:11
#<!-- -->29 0x0000000001e2f674 ParseCompoundStatement /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:966:10
#<!-- -->30 0x0000000001e2f674 ParseCompoundStatement /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:931:10
#<!-- -->31 0x0000000001e2f674 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:279:12
#<!-- -->32 0x0000000001e2ec66 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:114:20
#<!-- -->33 0x0000000001e37b81 clang::Parser::ParseCompoundStatementBody(bool) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:1157:11
#<!-- -->34 0x0000000001e390ad clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseStmt.cpp:2428:21
#<!-- -->35 0x0000000001d86569 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/Parser.cpp:0:0
#<!-- -->36 0x0000000001da3980 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::SourceLocation*, clang::Parser::ForRangeInit*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseDecl.cpp:2121:18
#<!-- -->37 0x0000000001d853a2 clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/Parser.cpp:1179:10
#<!-- -->38 0x0000000001d84de0 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/Parser.cpp:1193:12
#<!-- -->39 0x0000000001d83fd0 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsingDeclSpec*) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/Parser.cpp:1019:12
#<!-- -->40 0x0000000001d81adc clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/Parser.cpp:737:10
#<!-- -->41 0x0000000001d7d58e clang::ParseAST(clang::Sema&, bool, bool) /home/runner/work/clangd/clangd/llvm-project/clang/lib/Parse/ParseAST.cpp:161:5
#<!-- -->42 0x0000000001b9219b clang::FrontendAction::Execute() /home/runner/work/clangd/clangd/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1041:10
#<!-- -->43 0x00000000014cc747 operator bool /home/runner/work/clangd/clangd/llvm-project/llvm/include/llvm/Support/Error.h:235:21
#<!-- -->44 0x00000000014cc747 clang::clangd::BackgroundIndex::index(clang::tooling::CompileCommand) /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/index/Background.cpp:322:19
#<!-- -->45 0x00000000014cf447 _M_data /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/basic_string.h:187:28
#<!-- -->46 0x00000000014cf447 _M_is_local /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/basic_string.h:222:16
#<!-- -->47 0x00000000014cf447 _M_dispose /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/basic_string.h:231:7
#<!-- -->48 0x00000000014cf447 ~basic_string /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/basic_string.h:658:9
#<!-- -->49 0x00000000014cf447 ~CompileCommand /home/runner/work/clangd/clangd/llvm-project/clang/include/clang/Tooling/CompilationDatabase.h:44:8
#<!-- -->50 0x00000000014cf447 operator() /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/index/Background.cpp:165:22
#<!-- -->51 0x00000000014cf447 __invoke_impl<void, (lambda at /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/index/Background.cpp:158:27) &> /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14
#<!-- -->52 0x00000000014cf447 __invoke_r<void, (lambda at /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/index/Background.cpp:158:27) &> /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:153:7
#<!-- -->53 0x00000000014cf447 std::_Function_handler<void (), clang::clangd::BackgroundIndex::indexFileTask(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)::$_3>::_M_invoke(std::_Any_data const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:291:9
#<!-- -->54 0x00000000014d30ff clang::clangd::BackgroundQueue::work(std::function<void ()>) /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/index/BackgroundQueue.cpp:43:25
#<!-- -->55 0x00000000014cddf2 ~_Function_base /usr/bin/../lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/std_function.h:244:11
#<!-- -->56 0x00000000014cddf2 operator() /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/index/Background.cpp:111:27
#<!-- -->57 0x00000000014cddf2 void llvm::detail::UniqueFunctionBase<void>::CallImpl<clang::clangd::BackgroundIndex::BackgroundIndex(clang::clangd::ThreadsafeFS const&, clang::clangd::GlobalCompilationDatabase const&, llvm::unique_function<clang::clangd::BackgroundIndexStorage* (llvm::StringRef)>, clang::clangd::BackgroundIndex::Options)::$_1>(void*) /home/runner/work/clangd/clangd/llvm-project/llvm/include/llvm/ADT/FunctionExtras.h:222:12
#<!-- -->58 0x0000000001564cb1 PointerIntPair /home/runner/work/clangd/clangd/llvm-project/llvm/include/llvm/ADT/PointerIntPair.h:49:12
#<!-- -->59 0x0000000001564cb1 UniqueFunctionBase /home/runner/work/clangd/clangd/llvm-project/llvm/include/llvm/ADT/FunctionExtras.h:340:3
#<!-- -->60 0x0000000001564cb1 unique_function /home/runner/work/clangd/clangd/llvm-project/llvm/include/llvm/ADT/FunctionExtras.h:369:3
#<!-- -->61 0x0000000001564cb1 operator() /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/support/Threading.cpp:102:14
#<!-- -->62 0x0000000001564cb1 Apply<(lambda at /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/support/Threading.cpp:97:15)> /home/runner/work/clangd/clangd/llvm-project/llvm/include/llvm/Support/thread.h:42:5
#<!-- -->63 0x0000000001564cb1 GenericThreadProxy<std::tuple<(lambda at /home/runner/work/clangd/clangd/llvm-project/clang-tools-extra/clangd/support/Threading.cpp:97:15)> > /home/runner/work/clangd/clangd/llvm-project/llvm/include/llvm/Support/thread.h:50:5
#<!-- -->64 0x0000000001564cb1 void* llvm::thread::ThreadProxy<std::tuple<clang::clangd::AsyncTaskRunner::runAsync(llvm::Twine const&, llvm::unique_function<void ()>)::$_1> >(void*) /home/runner/work/clangd/clangd/llvm-project/llvm/include/llvm/Support/thread.h:60:5
#<!-- -->65 0x00007f5d054e66db start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x76db)
#<!-- -->66 0x00007f5d04a65a3f clone /build/glibc-2ORdQG/glibc-2.27/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:97:0 |
Neojan
changed the title
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The stacktrace looks more like a clang issue to me. And yes, I can reproduce it on clang-15: https://gcc.godbolt.org/z/6x3vabWj1 |
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Fixed in clang 16 |
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If there is an "N" in the code, it will cause cland crash
eg: printf("abcdefg \N");
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