| Issue |
174965
|
| Summary |
[Clang] Crash: "undeduced type in IR-generation" with nested lambdas and static variables
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
Xniao
|
***Generated by fuzzer.***
Clang trunk crashed and goes back to 9.0.
Compiler Explorer: https://godbolt.org/z/efq7ojaT9
## Program
```cpp
#include <iostream>
#include <stdarg.h>
template <int &T> void FuncTemplate() {
std::cout << "Template instantiated with reference to int: " << T
<< std::endl;
}
template <typename... Ts> void outer_lambda(Ts &&...ts) {
std::cout << std::endl;
}
int main() {
auto outer = [](auto &&...args) {
static int InternalVar = 43;
FuncTemplate<InternalVar>();
};
auto deep_lambda = [outer](auto &&...args) {
outer(args...);
};
deep_lambda(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
return 0;
}
```
## Stack Dump
```bash
undeduced type in IR-generation
UNREACHABLE executed at /root/llvm-project/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp:263!
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 -std=c++23 <source>
1. <eof> parser at end of file
2. Per-file LLVM IR generation
3. <source>:4:24: Generating code for declaration 'FuncTemplate'
#0 0x00000000042ffb48 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x42ffb48)
#1 0x00000000042fcf74 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x42fcf74)
#2 0x000000000423fd48 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000783595c42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x0000783595c969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x0000783595c42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x0000783595c287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000000000424a8ba (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x424a8ba)
#8 0x0000000004878b8a clang::CodeGen::CodeGenFunction::getEvaluationKind(clang::QualType) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4878b8a)
#9 0x0000000004ae603f clang::CodeGen::isAggregateTypeForABI(clang::QualType) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ae603f)
#10 0x0000000004acd029 (anonymous namespace)::X86_64ABIInfo::getIndirectReturnResult(clang::QualType) const X86.cpp:0:0
#11 0x0000000004ad6843 (anonymous namespace)::X86_64ABIInfo::computeInfo(clang::CodeGen::CGFunctionInfo&) const X86.cpp:0:0
#12 0x0000000004b5ca39 clang::CodeGen::CodeGenTypes::arrangeLLVMFunctionInfo(clang::CanQual<clang::Type>, clang::CodeGen::FnInfoOpts, llvm::ArrayRef<clang::CanQual<clang::Type>>, clang::FunctionType::ExtInfo, llvm::ArrayRef<clang::FunctionType::ExtParameterInfo>, clang::CodeGen::RequiredArgs) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4b5ca39)
#13 0x0000000004b5e51e arrangeLLVMFunctionInfo(clang::CodeGen::CodeGenTypes&, bool, llvm::SmallVectorImpl<clang::CanQual<clang::Type>>&, clang::CanQual<clang::FunctionProtoType>) CGCall.cpp:0:0
#14 0x0000000004b619c1 clang::CodeGen::CodeGenTypes::arrangeCXXMethodType(clang::CXXRecordDecl const*, clang::FunctionProtoType const*, clang::CXXMethodDecl const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4b619c1)
#15 0x0000000004b61c1b clang::CodeGen::CodeGenTypes::arrangeCXXMethodDeclaration(clang::CXXMethodDecl const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4b61c1b)
#16 0x00000000048fb32b clang::CodeGen::CodeGenModule::GetAddrOfGlobal(clang::GlobalDecl, clang::CodeGen::ForDefinition_t) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x48fb32b)
#17 0x0000000004bb82e1 clang::CodeGen::CodeGenModule::getOrCreateStaticVarDecl(clang::VarDecl const&, llvm::GlobalValue::LinkageTypes) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4bb82e1)
#18 0x00000000046770bc clang::CodeGen::CodeGenFunction::EmitDeclRefLValue(clang::DeclRefExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x46770bc)
#19 0x000000000467a54e clang::CodeGen::CodeGenFunction::EmitLValueHelper(clang::Expr const*, clang::CodeGen::KnownNonNull_t) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x467a54e)
#20 0x000000000467af97 void llvm::function_ref<void ()>::callback_fn<clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*, clang::CodeGen::KnownNonNull_t)::'lambda'()>(long) CGExpr.cpp:0:0
#21 0x000000000852b1e1 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x852b1e1)
#22 0x0000000004645c8c clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*, clang::CodeGen::KnownNonNull_t) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4645c8c)
#23 0x000000000466bade clang::CodeGen::CodeGenFunction::EmitCheckedLValue(clang::Expr const*, clang::CodeGen::CodeGenFunction::TypeCheckKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x466bade)
#24 0x00000000046e5750 (anonymous namespace)::ScalarExprEmitter::EmitLoadOfLValue(clang::Expr const*) CGExprScalar.cpp:0:0
#25 0x00000000046df328 clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#26 0x00000000046df61b (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#27 0x00000000046dd3db clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#28 0x00000000046df61b (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#29 0x00000000046e5c1b (anonymous namespace)::ScalarExprEmitter::VisitCastExpr(clang::CastExpr*) CGExprScalar.cpp:0:0
#30 0x00000000046dd426 clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#31 0x00000000046e29fc clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x46e29fc)
#32 0x000000000464470e clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, clang::CodeGen::AggValueSlot, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x464470e)
#33 0x000000000464499c clang::CodeGen::CodeGenFunction::EmitAnyExprToTemp(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x464499c)
#34 0x0000000004b662f3 clang::CodeGen::CodeGenFunction::EmitCallArg(clang::CodeGen::CallArgList&, clang::Expr const*, clang::QualType) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4b662f3)
#35 0x0000000004b71b45 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) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4b71b45)
#36 0x0000000004699e5a commonEmitCXXMemberOrOperatorCall(clang::CodeGen::CodeGenFunction&, clang::GlobalDecl, llvm::Value*, llvm::Value*, clang::QualType, clang::CallExpr const*, clang::CodeGen::CallArgList&, clang::CodeGen::CallArgList*) CGExprCXX.cpp:0:0
#37 0x000000000469a144 clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorCall(clang::CXXMethodDecl const*, clang::CodeGen::CGCallee const&, clang::CodeGen::ReturnValueSlot, llvm::Value*, llvm::Value*, clang::QualType, clang::CallExpr const*, clang::CodeGen::CallArgList*, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x469a144)
#38 0x000000000469cff3 clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorMemberCallExpr(clang::CallExpr const*, clang::CXXMethodDecl const*, clang::CodeGen::ReturnValueSlot, bool, clang::NestedNameSpecifier, bool, clang::Expr const*, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x469cff3)
#39 0x000000000469de48 clang::CodeGen::CodeGenFunction::EmitCXXOperatorMemberCallExpr(clang::CXXOperatorCallExpr const*, clang::CXXMethodDecl const*, clang::CodeGen::ReturnValueSlot, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x469de48)
#40 0x0000000004670cc6 clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4670cc6)
#41 0x0000000004670ed5 clang::CodeGen::CodeGenFunction::EmitCallExprLValue(clang::CallExpr const*, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4670ed5)
#42 0x000000000467a450 clang::CodeGen::CodeGenFunction::EmitLValueHelper(clang::Expr const*, clang::CodeGen::KnownNonNull_t) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x467a450)
#43 0x000000000467af97 void llvm::function_ref<void ()>::callback_fn<clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*, clang::CodeGen::KnownNonNull_t)::'lambda'()>(long) CGExpr.cpp:0:0
#44 0x000000000852b1e1 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x852b1e1)
#45 0x0000000004645c8c clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*, clang::CodeGen::KnownNonNull_t) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4645c8c)
#46 0x000000000469be02 clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorMemberCallExpr(clang::CallExpr const*, clang::CXXMethodDecl const*, clang::CodeGen::ReturnValueSlot, bool, clang::NestedNameSpecifier, bool, clang::Expr const*, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x469be02)
#47 0x000000000469de48 clang::CodeGen::CodeGenFunction::EmitCXXOperatorMemberCallExpr(clang::CXXOperatorCallExpr const*, clang::CXXMethodDecl const*, clang::CodeGen::ReturnValueSlot, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x469de48)
#48 0x0000000004670cc6 clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4670cc6)
#49 0x0000000004670ed5 clang::CodeGen::CodeGenFunction::EmitCallExprLValue(clang::CallExpr const*, llvm::CallBase**) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4670ed5)
#50 0x000000000467a450 clang::CodeGen::CodeGenFunction::EmitLValueHelper(clang::Expr const*, clang::CodeGen::KnownNonNull_t) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x467a450)
#51 0x000000000467af97 void llvm::function_ref<void ()>::callback_fn<clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*, clang::CodeGen::KnownNonNull_t)::'lambda'()>(long) CGExpr.cpp:0:0
#52 0x000000000852b1e1 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x852b1e1)
#53 0x0000000004645c8c clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*, clang::CodeGen::KnownNonNull_t) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4645c8c)
#54 0x000000000465bf2e clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x465bf2e)
#55 0x000000000480ae67 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x480ae67)
#56 0x00000000048133db clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x48133db)
#57 0x000000000487b3be clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x487b3be)
#58 0x000000000488c7f4 clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x488c7f4)
#59 0x00000000048fa4d0 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x48fa4d0)
#60 0x00000000048f5174 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x48f5174)
#61 0x00000000049027fc clang::CodeGen::CodeGenModule::EmitDeferred() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49027fc)
#62 0x0000000004902718 clang::CodeGen::CodeGenModule::EmitDeferred() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4902718)
#63 0x0000000004902718 clang::CodeGen::CodeGenModule::EmitDeferred() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4902718)
#64 0x0000000004906493 clang::CodeGen::CodeGenModule::Release() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4906493)
#65 0x0000000004c675ee (anonymous namespace)::CodeGeneratorImpl::HandleTranslationUnit(clang::ASTContext&) ModuleBuilder.cpp:0:0
#66 0x0000000004c65005 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c65005)
#67 0x0000000006a350bc clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a350bc)
#68 0x0000000004c657e8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c657e8)
#69 0x0000000004f5db65 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f5db65)
#70 0x0000000004eddc6e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4eddc6e)
#71 0x000000000505829d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x505829d)
#72 0x0000000000de87de cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xde87de)
#73 0x0000000000ddf1aa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#74 0x0000000000ddf32d 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
#75 0x0000000004cd84e9 void llvm::<truncated>Please see the issue for the entire body.
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