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clang crash #53983

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cho-regin opened this issue Feb 22, 2022 · 7 comments
Closed

clang crash #53983

cho-regin opened this issue Feb 22, 2022 · 7 comments
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@luken-google
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c++20 clang:codegen confirmed Verified by a second party consteval C++20 consteval crash-on-valid

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@cho-regin
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cho-regin commented Feb 22, 2022 •
edited by usx95

Crashing in clang-trunk https://godbolt.org/z/EndP9c7qE

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-trunk/bin/clang++ -g -o /app/output.s -mllvm --x86-asm-syntax=intel -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -O2 --std=c++2a <source>
1.	<source>:235:1: current parser token 'bool'
2.	<source>:226:3 <Spelling=<source>:200:20>: LLVM IR generation of declaration 'main'
3.	<source>:226:3 <Spelling=<source>:200:20>: Generating code for declaration 'main'
 #0 0x0000557424fbb27f PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
 #1 0x0000557424fb9150 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x35b9150)
 #2 0x0000557424ef2ed8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x00007fc70ca033c0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
 #4 0x000055742477ee02 llvm::PointerType::get(llvm::Type*, unsigned int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x2d7ee02)
 #5 0x000055742549b577 clang::CodeGen::CGBuilderTy::CreateStructGEP(clang::CodeGen::Address, unsigned int, llvm::Twine const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3a9b577)
 #6 0x00005574255caf8d clang::CodeGen::CodeGenFunction::EmitAggregateStore(llvm::Value*, clang::CodeGen::Address, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3bcaf8d)
 #7 0x00005574256509f1 (anonymous namespace)::AggExprEmitter::VisitConstantExpr(clang::ConstantExpr*) CGExprAgg.cpp:0:0
 #8 0x000055742564ed57 clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::AggExprEmitter, void>::Visit(clang::Stmt*) CGExprAgg.cpp:0:0
 #9 0x0000557425650bc1 clang::CodeGen::CodeGenFunction::EmitAggExpr(clang::Expr const*, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c50bc1)
#10 0x0000557425643111 clang::CodeGen::CodeGenFunction::EmitAnyExprToMem(clang::Expr const*, clang::CodeGen::Address, clang::Qualifiers, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c43111)
#11 0x00005574256476e6 clang::CodeGen::CodeGenFunction::EmitMaterializeTemporaryExpr(clang::MaterializeTemporaryExpr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c476e6)
#12 0x000055742563ea5e clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c3ea5e)
#13 0x000055742564731d clang::CodeGen::CodeGenFunction::EmitReferenceBindingToExpr(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c4731d)
#14 0x00005574255d7b74 clang::CodeGen::CodeGenFunction::EmitCallArg(clang::CodeGen::CallArgList&, clang::Expr const*, clang::QualType) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3bd7b74)
#15 0x00005574255d92bf 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-trunk/bin/clang+++0x3bd92bf)
#16 0x000055742563ccf3 clang::CodeGen::CodeGenFunction::EmitCall(clang::QualType, clang::CodeGen::CGCallee const&, clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::Value*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c3ccf3)
#17 0x0000557425648ae8 clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c48ae8)
#18 0x0000557425649fcb clang::CodeGen::RValue llvm::function_ref<clang::CodeGen::RValue (clang::CodeGen::ReturnValueSlot)>::callback_fn<(anonymous namespace)::AggExprEmitter::VisitCallExpr(clang::CallExpr const*)::'lambda'(clang::CodeGen::ReturnValueSlot)>(long, clang::CodeGen::ReturnValueSlot) CGExprAgg.cpp:0:0
#19 0x000055742564d49b (anonymous namespace)::AggExprEmitter::withReturnValueSlot(clang::Expr const*, llvm::function_ref<clang::CodeGen::RValue (clang::CodeGen::ReturnValueSlot)>) CGExprAgg.cpp:0:0
#20 0x000055742564d873 (anonymous namespace)::AggExprEmitter::VisitCallExpr(clang::CallExpr const*) CGExprAgg.cpp:0:0
#21 0x000055742564dc3b clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::AggExprEmitter, void>::Visit(clang::Stmt*) CGExprAgg.cpp:0:0
#22 0x0000557425650bc1 clang::CodeGen::CodeGenFunction::EmitAggExpr(clang::Expr const*, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c50bc1)
#23 0x000055742562f1fe clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, clang::CodeGen::AggValueSlot, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c2f1fe)
#24 0x000055742562f8c9 clang::CodeGen::CodeGenFunction::EmitAnyExprToTemp(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c2f8c9)
#25 0x00005574255d7c5b clang::CodeGen::CodeGenFunction::EmitCallArg(clang::CodeGen::CallArgList&, clang::Expr const*, clang::QualType) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3bd7c5b)
#26 0x00005574255d92bf 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-trunk/bin/clang+++0x3bd92bf)
#27 0x000055742563ccf3 clang::CodeGen::CodeGenFunction::EmitCall(clang::QualType, clang::CodeGen::CGCallee const&, clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::Value*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c3ccf3)
#28 0x0000557425648ae8 clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c48ae8)
#29 0x0000557425685250 (anonymous namespace)::ScalarExprEmitter::VisitCallExpr(clang::CallExpr const*) CGExprScalar.cpp:0:0
#30 0x0000557425679bf3 (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#31 0x0000557425679bdc (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#32 0x000055742567aa98 (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#33 0x000055742567c2a3 clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c7c2a3)
#34 0x0000557425635315 clang::CodeGen::CodeGenFunction::EvaluateExprAsBool(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c35315)
#35 0x00005574253c7fb8 clang::CodeGen::CodeGenFunction::EmitBranchOnBoolExpr(clang::Expr const*, llvm::BasicBlock*, llvm::BasicBlock*, unsigned long, clang::Stmt::Likelihood) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x39c7fb8)
#36 0x00005574253780d1 clang::CodeGen::CodeGenFunction::EmitIfStmt(clang::IfStmt const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x39780d1)
#37 0x0000557425372ad9 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3972ad9)
#38 0x000055742537820e clang::CodeGen::CodeGenFunction::EmitIfStmt(clang::IfStmt const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x397820e)
#39 0x0000557425372ad9 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3972ad9)
#40 0x000055742537852c clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x397852c)
#41 0x00005574253c8c43 clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x39c8c43)
#42 0x00005574253d273a clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x39d273a)
#43 0x0000557425419198 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3a19198)
#44 0x00005574254162d5 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3a162d5)
#45 0x0000557425416a13 clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3a16a13)
#46 0x000055742541cdb1 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.5387) CodeGenModule.cpp:0:0
#47 0x0000557425f70251 (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) ModuleBuilder.cpp:0:0
#48 0x0000557425f64ef2 clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4564ef2)
#49 0x0000557426de41cc clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x53e41cc)
#50 0x0000557425f6e1f2 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x456e1f2)
#51 0x000055742596ac41 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3f6ac41)
#52 0x00005574259053e2 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3f053e2)
#53 0x0000557425a37013 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4037013)
#54 0x0000557422bafca4 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x11afca4)
#55 0x0000557422babc5d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#56 0x00005574257a19f5 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#57 0x0000557424ef34c3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x34f34c3)
#58 0x00005574257a3ac8 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3da3ac8)
#59 0x0000557425776efa clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3d76efa)
#60 0x0000557425777a3f clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3d77a3f)
#61 0x0000557425780405 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3d80405)
#62 0x0000557422abb752 main (/opt/compiler-explorer/clang-trunk/bin/clang+++0x10bb752)
#63 0x00007fc70c4b30b3 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b3)
#64 0x0000557422bab7da _start (/opt/compiler-explorer/clang-trunk/bin/clang+++0x11ab7da)
clang-15: error: clang frontend command failed with exit code 139 (use -v to see invocation)
ASM generation compiler returned: 139
<source>:1:9: warning: #pragma once in main file [-Wpragma-once-outside-header]
#pragma once
        ^
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-trunk-20220222/bin/clang-15 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj --mrelax-relocations -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name example.cpp -mrelocation-model static -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -mllvm -treat-scalable-fixed-error-as-warning -debug-info-kind=constructor -dwarf-version=5 -debugger-tuning=gdb -fcoverage-compilation-dir=/app -resource-dir /opt/compiler-explorer/clang-trunk-20220222/lib/clang/15.0.0 -internal-isystem /opt/compiler-explorer/gcc-snapshot/lib/gcc/x86_64-linux-gnu/12.0.1/../../../../include/c++/12.0.1 -internal-isystem /opt/compiler-explorer/gcc-snapshot/lib/gcc/x86_64-linux-gnu/12.0.1/../../../../include/c++/12.0.1/x86_64-linux-gnu -internal-isystem /opt/compiler-explorer/gcc-snapshot/lib/gcc/x86_64-linux-gnu/12.0.1/../../../../include/c++/12.0.1/backward -internal-isystem /opt/compiler-explorer/clang-trunk-20220222/lib/clang/15.0.0/include -internal-isystem /usr/local/include -internal-isystem /opt/compiler-explorer/gcc-snapshot/lib/gcc/x86_64-linux-gnu/12.0.1/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 --std=c++2a -fdeprecated-macro -fdebug-compilation-dir=/app -ferror-limit 19 -fgnuc-version=4.2.1 -fno-implicit-modules -fcxx-exceptions -fexceptions -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/example-27c9b0.o -x c++ <source>
1.	<source>:235:1: current parser token 'bool'
2.	<source>:226:3 <Spelling=<source>:200:20>: LLVM IR generation of declaration 'main'
3.	<source>:226:3 <Spelling=<source>:200:20>: Generating code for declaration 'main'
 #0 0x0000560613bbb27f PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
 #1 0x0000560613bb8b3d SignalHandler(int) Signals.cpp:0:0
 #2 0x00007fe03ba043c0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
 #3 0x000056061337ee02 llvm::PointerType::get(llvm::Type*, unsigned int) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x2d7ee02)
 #4 0x000056061409b577 clang::CodeGen::CGBuilderTy::CreateStructGEP(clang::CodeGen::Address, unsigned int, llvm::Twine const&) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3a9b577)
 #5 0x00005606141caf8d clang::CodeGen::CodeGenFunction::EmitAggregateStore(llvm::Value*, clang::CodeGen::Address, bool) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3bcaf8d)
 #6 0x00005606142509f1 (anonymous namespace)::AggExprEmitter::VisitConstantExpr(clang::ConstantExpr*) CGExprAgg.cpp:0:0
 #7 0x000056061424ed57 clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::AggExprEmitter, void>::Visit(clang::Stmt*) CGExprAgg.cpp:0:0
 #8 0x0000560614250bc1 clang::CodeGen::CodeGenFunction::EmitAggExpr(clang::Expr const*, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c50bc1)
 #9 0x0000560614243111 clang::CodeGen::CodeGenFunction::EmitAnyExprToMem(clang::Expr const*, clang::CodeGen::Address, clang::Qualifiers, bool) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c43111)
#10 0x00005606142476e6 clang::CodeGen::CodeGenFunction::EmitMaterializeTemporaryExpr(clang::MaterializeTemporaryExpr const*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c476e6)
#11 0x000056061423ea5e clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c3ea5e)
#12 0x000056061424731d clang::CodeGen::CodeGenFunction::EmitReferenceBindingToExpr(clang::Expr const*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c4731d)
#13 0x00005606141d7b74 clang::CodeGen::CodeGenFunction::EmitCallArg(clang::CodeGen::CallArgList&, clang::Expr const*, clang::QualType) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3bd7b74)
#14 0x00005606141d92bf 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-trunk-20220222/bin/clang-15+0x3bd92bf)
#15 0x000056061423ccf3 clang::CodeGen::CodeGenFunction::EmitCall(clang::QualType, clang::CodeGen::CGCallee const&, clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::Value*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c3ccf3)
#16 0x0000560614248ae8 clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c48ae8)
#17 0x0000560614249fcb clang::CodeGen::RValue llvm::function_ref<clang::CodeGen::RValue (clang::CodeGen::ReturnValueSlot)>::callback_fn<(anonymous namespace)::AggExprEmitter::VisitCallExpr(clang::CallExpr const*)::'lambda'(clang::CodeGen::ReturnValueSlot)>(long, clang::CodeGen::ReturnValueSlot) CGExprAgg.cpp:0:0
#18 0x000056061424d49b (anonymous namespace)::AggExprEmitter::withReturnValueSlot(clang::Expr const*, llvm::function_ref<clang::CodeGen::RValue (clang::CodeGen::ReturnValueSlot)>) CGExprAgg.cpp:0:0
#19 0x000056061424d873 (anonymous namespace)::AggExprEmitter::VisitCallExpr(clang::CallExpr const*) CGExprAgg.cpp:0:0
#20 0x000056061424dc3b clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::AggExprEmitter, void>::Visit(clang::Stmt*) CGExprAgg.cpp:0:0
#21 0x0000560614250bc1 clang::CodeGen::CodeGenFunction::EmitAggExpr(clang::Expr const*, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c50bc1)
#22 0x000056061422f1fe clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, clang::CodeGen::AggValueSlot, bool) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c2f1fe)
#23 0x000056061422f8c9 clang::CodeGen::CodeGenFunction::EmitAnyExprToTemp(clang::Expr const*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c2f8c9)
#24 0x00005606141d7c5b clang::CodeGen::CodeGenFunction::EmitCallArg(clang::CodeGen::CallArgList&, clang::Expr const*, clang::QualType) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3bd7c5b)
#25 0x00005606141d92bf 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-trunk-20220222/bin/clang-15+0x3bd92bf)
#26 0x000056061423ccf3 clang::CodeGen::CodeGenFunction::EmitCall(clang::QualType, clang::CodeGen::CGCallee const&, clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::Value*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c3ccf3)
#27 0x0000560614248ae8 clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c48ae8)
#28 0x0000560614285250 (anonymous namespace)::ScalarExprEmitter::VisitCallExpr(clang::CallExpr const*) CGExprScalar.cpp:0:0
#29 0x0000560614279bf3 (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#30 0x0000560614279bdc (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#31 0x000056061427aa98 (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#32 0x000056061427c2a3 clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c7c2a3)
#33 0x0000560614235315 clang::CodeGen::CodeGenFunction::EvaluateExprAsBool(clang::Expr const*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3c35315)
#34 0x0000560613fc7fb8 clang::CodeGen::CodeGenFunction::EmitBranchOnBoolExpr(clang::Expr const*, llvm::BasicBlock*, llvm::BasicBlock*, unsigned long, clang::Stmt::Likelihood) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x39c7fb8)
#35 0x0000560613f780d1 clang::CodeGen::CodeGenFunction::EmitIfStmt(clang::IfStmt const&) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x39780d1)
#36 0x0000560613f72ad9 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3972ad9)
#37 0x0000560613f7820e clang::CodeGen::CodeGenFunction::EmitIfStmt(clang::IfStmt const&) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x397820e)
#38 0x0000560613f72ad9 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3972ad9)
#39 0x0000560613f7852c clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x397852c)
#40 0x0000560613fc8c43 clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x39c8c43)
#41 0x0000560613fd273a clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x39d273a)
#42 0x0000560614019198 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3a19198)
#43 0x00005606140162d5 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3a162d5)
#44 0x0000560614016a13 clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3a16a13)
#45 0x000056061401cdb1 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.5387) CodeGenModule.cpp:0:0
#46 0x0000560614b70251 (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) ModuleBuilder.cpp:0:0
#47 0x0000560614b64ef2 clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x4564ef2)
#48 0x00005606159e41cc clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x53e41cc)
#49 0x0000560614b6e1f2 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x456e1f2)
#50 0x000056061456ac41 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3f6ac41)
#51 0x00005606145053e2 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x3f053e2)
#52 0x0000560614637013 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x4037013)
#53 0x00005606117afca4 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x11afca4)
#54 0x00005606117abc5d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#55 0x00005606116ba5a7 main (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x10ba5a7)
#56 0x00007fe03b4b40b3 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b3)
#57 0x00005606117ab7da _start (/opt/compiler-explorer/clang-trunk-20220222/bin/clang-15+0x11ab7da)
clang-15: error: unable to execute command: Segmentation fault (core dumped)
clang-15: error: clang frontend command failed due to signal (use -v to see invocation)
Execution build compiler returned: 254
@tbaederr tbaederr added the c++20 label Feb 22, 2022
@llvmbot
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llvmbot commented Feb 22, 2022

@llvm/issue-subscribers-c-20

@tbaederr
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tbaederr commented Feb 22, 2022 •
edited

Much reduced test case:

struct typeBase
{
  constexpr typeBase() : Lvalue() {}
  int Lvalue;
};

struct type : private typeBase
{
  bool value;
  type(bool v = 0) { value = v; }
  consteval type(int i) { value = i; }
  const bool operator*() const { return value; }
};

auto operator > (const type&a, const type&b) { return *a > *b; }

int main() {
  type T;
  if (T > type(100)) { }
}

And the assertion that fails is:

clang++: /home/tbaeder/code/llvm-project/llvm/lib/IR/Instructions.cpp:1491: void llvm::StoreInst::AssertOK(): Assertion `cast<PointerType>(getOperand(1)->getType()) ->isOpaqueOrPointeeTypeMatches(getOperand(0)->getType()) && "Ptr must be a pointer to Val type!"' 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: bin/clang++ ./test.cpp -std=c++2a -c
1.	<eof> parser at end of file
2.	./test.cpp:23:5: LLVM IR generation of declaration 'main'
3.	./test.cpp:23:5: Generating code for declaration 'main'
(etc.)

Removing the consteval from the type(int i) constructor makes it work.

@tbaederr tbaederr added crash Prefer [crash-on-valid] or [crash-on-invalid] and removed new issue labels Feb 22, 2022
@AaronBallman
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I think this may be related to or a duplicate of #51764.

@AaronBallman AaronBallman added the confirmed Verified by a second party label Feb 22, 2022
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llvmbot commented Feb 22, 2022

@llvm/issue-subscribers-clang-codegen

@usx95 usx95 added the consteval C++20 consteval label Aug 20, 2022
@AaronBallman
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The reduced test case no longer crashes on trunk, but the original test case does still crash when emitting codegen.

@usx95
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usx95 commented Sep 5, 2022 •
edited

Reduce

struct Base {
    constexpr Base() : a(), b() {}
    char a : 1;
    char b;
};

struct Foo : private Base {
    constexpr Foo(bool b) {
        if (b) throw "test";
    }
};

struct Bar : private Base {
    consteval Bar(bool) {}
};

struct MyStruct {
    Foo foo = true;
    Bar bar = false;
};
MyStruct structTest;

https://godbolt.org/z/rxdP6YqMe

Does not crash if any of the following is true:

  • Foo::Foo(bool) does not throws. (Eg. Foo foo = false; in MyStruct)
  • Change char b to char b : 1 in Base.
  • Remove any member foo or bar from MyStruct.
  • Make Bar::Bar constexpr instead of consteval

@EugeneZelenko EugeneZelenko removed the crash Prefer [crash-on-valid] or [crash-on-invalid] label Sep 5, 2022
@luken-google luken-google self-assigned this Nov 28, 2022
@cor3ntin
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This no longer crashes on trunk.

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Labels
c++20 clang:codegen confirmed Verified by a second party consteval C++20 consteval crash-on-valid
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