| Issue |
132256
|
| Summary |
[clang] Crash with official test `Parser/cxx0x-attributes.cpp` and default template argument
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
Rush10233
|
Extended from [https://github.com/llvm/llvm-project/blob/main/clang/test/Parser/cxx0x-attributes.cpp](https://github.com/llvm/llvm-project/blob/main/clang/test/Parser/cxx0x-attributes.cpp).
The crash came when I was trying to add some useless template arguments with default values to the code.
Please see [https://godbolt.org/z/hYPEKhzMc](https://godbolt.org/z/hYPEKhzMc)
Stack Dump:
```
0. Program arguments: /opt/compiler-explorer/clang-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics <source>
1. <source>:312:41: current parser token '{'
2. <source>:291:13: parsing function body 'baz'
3. <source>:291:13: in compound statement ('{}')
#0 0x0000000003b7abe8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3b7abe8)
#1 0x0000000003b78d2c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3b78d2c)
#2 0x0000000003ac85a8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007a5387e42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x0000000006fc7404 clang::ASTContext::getElaboratedType(clang::ElaboratedTypeKeyword, clang::NestedNameSpecifier*, clang::QualType, clang::TagDecl*) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6fc7404)
#5 0x00000000065084a6 clang::Sema::BuildStdInitializerList(clang::QualType, clang::SourceLocation) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x65084a6)
#6 0x0000000006bfef42 clang::Sema::DeduceAutoType(clang::TypeLoc, clang::Expr*, clang::QualType&, clang::sema::TemplateDeductionInfo&, bool, bool, clang::TemplateSpecCandidateSet*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6bfef42)
#7 0x0000000006a61abf FinishForRangeVarDecl(clang::Sema&, clang::VarDecl*, clang::Expr*, clang::SourceLocation, int) SemaStmt.cpp:0:0
#8 0x0000000006a77caa clang::Sema::ActOnCXXForRangeStmt(clang::Scope*, clang::SourceLocation, clang::SourceLocation, clang::Stmt*, clang::Stmt*, clang::SourceLocation, clang::Expr*, clang::SourceLocation, clang::Sema::BuildForRangeKind, llvm::ArrayRef<clang::MaterializeTemporaryExpr*>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6a77caa)
#9 0x00000000061ed100 clang::Parser::ParseForStatement(clang::SourceLocation*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x61ed100)
#10 0x00000000061e94c4 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x61e94c4)
#11 0x00000000061ea69e clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x61ea69e)
#12 0x00000000061f30bd clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x61f30bd)
#13 0x00000000061f3afa clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x61f3afa)
#14 0x00000000060e1ee6 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x60e1ee6)
#15 0x000000000612cfdf clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x612cfdf)
#16 0x00000000060da427 clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x60da427)
#17 0x00000000060db23e clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x60db23e)
#18 0x00000000060e4f3a clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x60e4f3a)
#19 0x00000000060e67d8 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x60e67d8)
#20 0x00000000060d4b5a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x60d4b5a)
#21 0x00000000044f8d8d clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x44f8d8d)
#22 0x00000000047ddc31 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x47ddc31)
#23 0x000000000475c1bb clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x475c1bb)
#24 0x00000000048cddb3 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x48cddb3)
#25 0x0000000000d65be1 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xd65be1)
#26 0x0000000000d5e3dd ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#27 0x0000000004546089 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#28 0x0000000003ac89c3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3ac89c3)
#29 0x00000000045462a9 clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#30 0x00000000045095cd clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x45095cd)
#31 0x000000000450a591 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x450a591)
#32 0x000000000451492c clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x451492c)
#33 0x0000000000d629b1 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xd629b1)
#34 0x0000000000c23264 main (/opt/compiler-explorer/clang-trunk/bin/clang+++0xc23264)
#35 0x00007a5387e29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#36 0x00007a5387e29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#37 0x0000000000d5de75 _start (/opt/compiler-explorer/clang-trunk/bin/clang+++0xd5de75)
clang++: error: clang frontend command failed with exit code 139 (use -v to see invocation)
Compiler returned: 139
```
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