| Issue |
176392
|
| Summary |
[Clang] Assertion `!CodeSynthesisContexts.empty()' failed` in `clang::Sema::getCurLambda(bool)`
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
Xniao
|
***Generated by fuzzer.***
Clang trunk crashed and goes back to 20.1.
Compiler Explorer: https://godbolt.org/z/eq8hz5fGq
Maybe related to #176045, but this one goes back to 20.1.
## Program
```cpp
template <int BITS> struct FingerprintTable;
int main() {
[] { template <int BITS> FingerprintTable<BITS>:: };
}
```
## Stack Dump
```bash
clang++: /root/llvm-project/llvm/tools/clang/lib/Sema/Sema.cpp:2574: clang::sema::LambdaScopeInfo* clang::Sema::getCurLambda(bool): Assertion `!CodeSynthesisContexts.empty()' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/clang++ -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>:3:53: current parser token '}'
2. <source>:2:12: parsing function body 'main'
3. <source>:2:12: in compound statement ('{}')
4. <source>:3:3: lambda _expression_ parsing
5. <source>:3:6: in compound statement ('{}')
#0 0x000000000430a6b8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x430a6b8)
#1 0x0000000004307b14 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4307b14)
#2 0x0000000004249de8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x000071d714e42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x000071d714e969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x000071d714e42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x000071d714e287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000071d714e2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x000071d714e39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000006be0652 clang::Sema::getCurLambda(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6be0652)
#10 0x000000000708b214 clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x708b214)
#11 0x0000000007384b43 BuildConvertedConstantExpression(clang::Sema&, clang::Expr*, clang::QualType, clang::CCEKind, clang::NamedDecl*, clang::APValue&) SemaOverload.cpp:0:0
#12 0x0000000007384f7f clang::Sema::BuildConvertedConstantExpression(clang::Expr*, clang::QualType, clang::CCEKind, clang::NamedDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7384f7f)
#13 0x000000000746b3e1 clang::Sema::CheckTemplateArgument(clang::NamedDecl*, clang::QualType, clang::Expr*, clang::TemplateArgument&, clang::TemplateArgument&, bool, clang::Sema::CheckTemplateArgumentKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x746b3e1)
#14 0x000000000746e14f clang::Sema::CheckTemplateArgument(clang::NamedDecl*, clang::TemplateArgumentLoc&, clang::NamedDecl*, clang::SourceLocation, clang::SourceLocation, unsigned int, clang::Sema::CheckTemplateArgumentInfo&, clang::Sema::CheckTemplateArgumentKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x746e14f)
#15 0x000000000746f24e clang::Sema::CheckTemplateArgumentList(clang::TemplateDecl*, clang::TemplateParameterList*, clang::SourceLocation, clang::TemplateArgumentListInfo&, clang::DefaultArguments const&, bool, clang::Sema::CheckTemplateArgumentInfo&, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x746f24e)
#16 0x0000000007480177 clang::Sema::CheckTemplateIdType(clang::ElaboratedTypeKeyword, clang::TemplateName, clang::SourceLocation, clang::TemplateArgumentListInfo&, clang::Scope*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7480177)
#17 0x00000000074af925 clang::TreeTransform<(anonymous namespace)::CurrentInstantiationRebuilder>::TransformTemplateSpecializationType(clang::TypeLocBuilder&, clang::TemplateSpecializationTypeLoc, clang::QualType, clang::NamedDecl*, bool) SemaTemplate.cpp:0:0
#18 0x00000000074afd99 clang::TreeTransform<(anonymous namespace)::CurrentInstantiationRebuilder>::TransformTypeInObjectScope(clang::TypeLocBuilder&, clang::TypeLoc, clang::QualType, clang::NamedDecl*) SemaTemplate.cpp:0:0
#19 0x00000000074b02c2 clang::TreeTransform<(anonymous namespace)::CurrentInstantiationRebuilder>::TransformNestedNameSpecifierLoc(clang::NestedNameSpecifierLoc, clang::QualType, clang::NamedDecl*) SemaTemplate.cpp:0:0
#20 0x00000000074b37cc clang::Sema::RebuildNestedNameSpecifierInCurrentInstantiation(clang::CXXScopeSpec&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x74b37cc)
#21 0x0000000006c73043 clang::Sema::ActOnCXXEnterDeclaratorScope(clang::Scope*, clang::CXXScopeSpec&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c73043)
#22 0x0000000006a8ec2a clang::Parser::DeclaratorScopeObj::EnterDeclaratorScope() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a8ec2a)
#23 0x0000000006ab7260 clang::Parser::ParseDirectDeclarator(clang::Declarator&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ab7260)
#24 0x0000000006aa3bbe clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void (clang::Parser::*)(clang::Declarator&)) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6aa3bbe)
#25 0x00000000085535d1 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x85535d1)
#26 0x0000000006aa68df clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6aa68df)
#27 0x0000000006b770e8 clang::Parser::ParseDeclarationAfterTemplate(clang::DeclaratorContext, clang::Parser::ParsedTemplateInfo&, clang::ParsingDeclRAIIObject&, clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b770e8)
#28 0x0000000006b845d9 clang::Parser::ParseTemplateDeclarationOrSpecialization(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier) (.part.0) ParseTemplate.cpp:0:0
#29 0x0000000006b848a7 clang::Parser::ParseTemplateDeclarationOrSpecialization(clang::DeclaratorContext, clang::SourceLocation&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b848a7)
#30 0x0000000006b60fe7 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::LabelDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b60fe7)
#31 0x0000000006b62006 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::LabelDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b62006)
#32 0x0000000006b6a94e clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b6a94e)
#33 0x0000000006afe0f2 clang::Parser::ParseLambdaExpressionAfterIntroducer(clang::LambdaIntroducer&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6afe0f2)
#34 0x0000000006aff21b clang::Parser::ParseLambdaExpression() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6aff21b)
#35 0x0000000006adf7f5 clang::Parser::ParseCastExpression(clang::CastParseKind, bool, bool&, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6adf7f5)
#36 0x0000000006ae0217 clang::Parser::ParseCastExpression(clang::CastParseKind, bool, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ae0217)
#37 0x0000000006ae02a9 clang::Parser::ParseAssignmentExpression(clang::TypoCorrectionTypeBehavior) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ae02a9)
#38 0x0000000006ae4889 clang::Parser::ParseExpression(clang::TypoCorrectionTypeBehavior) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ae4889)
#39 0x0000000006b6a179 clang::Parser::ParseExprStatement(clang::Parser::ParsedStmtContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b6a179)
#40 0x0000000006b61624 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::LabelDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b61624)
#41 0x0000000006b62006 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::LabelDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b62006)
#42 0x0000000006b6a94e clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b6a94e)
#43 0x0000000006b6b19a clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b6b19a)
#44 0x0000000006a715cb clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a715cb)
#45 0x0000000006aa7a3d clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6aa7a3d)
#46 0x0000000006a6472b clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6472b)
#47 0x0000000006a64f1f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a64f1f)
#48 0x0000000006a6cd4a clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6cd4a)
#49 0x0000000006a6dce5 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6dce5)
#50 0x0000000006a4ed6a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a4ed6a)
#51 0x0000000004c722a8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c722a8)
#52 0x0000000004f6bc55 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f6bc55)
#53 0x0000000004eeb8de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4eeb8de)
#54 0x000000000506698d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x506698d)
#55 0x0000000000ddcf9e cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xddcf9e)
#56 0x0000000000dd396a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#57 0x0000000000dd3aed int llvm::function_ref<int (llvm::SmallVectorImpl<char const*>&)>::callback_fn<clang_main(int, char**, llvm::ToolContext const&)::'lambda'(llvm::SmallVectorImpl<char const*>&)>(long, llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#58 0x0000000004ce55a9 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
#59 0x000000000424a284 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x424a284)
#60 0x0000000004ce5bbf 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
#61 0x0000000004ca6592 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ca6592)
#62 0x0000000004ca753e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ca753e)
#63 0x0000000004cae985 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4cae985)
#64 0x0000000000dd9311 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdd9311)
#65 0x0000000000c969c4 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc969c4)
#66 0x000071d714e29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#67 0x000071d714e29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#68 0x0000000000dd3405 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdd3405)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
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