Compiler crash with cilksan -O0

[wheatman]

When I try and compile with cilksan on -O0 I get a crash from the assertion
clang-10: /home/neboat/opencilk/llvm/lib/Transforms/Utils/ValueMapper.cpp:874: void (anonymous namespace)::Mapper::remapInstruction(llvm::Instruction *): Assertion `(Flags & RF_IgnoreMissingLocals) && "Referenced block not in value map!"' failed.

The same code does not crash with -O1, -O2, -O3, -Os, or -Ofast

The full output is

In file included from test.cpp:15:
In file included from ./SparseMatrix.cpp:3:
In file included from ./helpers.h:4:
./parallel.h:25:10: warning: '__cilkrts_get_worker_number' is deprecated [-Wdeprecated-declarations]
return __cilkrts_get_worker_number();
^
/home/ubuntu/OpenCilk-10.0.1-Linux/lib/clang/10.0.1/include/cilk/cilk_api.h:11:66: note: '__cilkrts_get_worker_number' has been explicitly marked deprecated here
extern unsigned __cilkrts_get_worker_number(void) attribute((deprecated));
^
clang-10: /home/neboat/opencilk/llvm/lib/Transforms/Utils/ValueMapper.cpp:874: void (anonymous namespace)::Mapper::remapInstruction(llvm::Instruction *): Assertion `(Flags & RF_IgnoreMissingLocals) && "Referenced block not in value map!"' failed.
Stack dump:
0. Program arguments: /home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name test.cpp -mrelocation-model static -mthread-model posix -mframe-pointer=all -fmath-errno -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -resource-dir /home/ubuntu/OpenCilk-10.0.1-Linux/lib/clang/10.0.1 -D NUM_RAW_BLOCKS=1 -D NUM_DENSE_BLOCKS=512 -D OPENMP=0 -D CILK=1 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/x86_64-linux-gnu/c++/9 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/x86_64-linux-gnu/c++/9 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/backward -internal-isystem /usr/local/include -internal-isystem /home/ubuntu/OpenCilk-10.0.1-Linux/lib/clang/10.0.1/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O0 -Wall -Wno-address-of-packed-member -Wextra -std=c++17 -fdeprecated-macro -fdebug-compilation-dir /home/ubuntu/SSTGraph_public -ferror-limit 19 -fmessage-length 0 -fopencilk -mllvm -use-opencilk-runtime-bc=true -mllvm -opencilk-runtime-bc-path=/home/ubuntu/OpenCilk-10.0.1-Linux/lib/clang/10.0.1/lib/x86_64-unknown-linux-gnu/libopencilk-abi.bc -fsanitize=cilk -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -faddrsig -o /tmp/test-7337aa.o -x c++ test.cpp

1.  <eof> parser at end of file
   

2.  Per-module optimization passes
   

3.  Running pass 'Lower Tapir to target' on module 'test.cpp'.
   

#0 0x0000000004813454 PrintStackTraceSignalHandler(void*) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x4813454)
#1 0x00000000048110fe llvm::sys::RunSignalHandlers() (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x48110fe)
#2 0x0000000004813865 SignalHandler(int) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x4813865)
#3 0x00007f25878943c0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
#4 0x00007f2585d8918b raise /build/glibc-eX1tMB/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#5 0x00007f2585d68859 abort /build/glibc-eX1tMB/glibc-2.31/stdlib/abort.c:81:7
#6 0x00007f2585d68729 get_sysdep_segment_value /build/glibc-eX1tMB/glibc-2.31/intl/loadmsgcat.c:509:8
#7 0x00007f2585d68729 _nl_load_domain /build/glibc-eX1tMB/glibc-2.31/intl/loadmsgcat.c:970:34
#8 0x00007f2585d79f36 (/lib/x86_64-linux-gnu/libc.so.6+0x36f36)
#9 0x000000000492ef9f (anonymous namespace)::Mapper::remapInstruction(llvm::Instruction*) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x492ef9f)
#10 0x000000000492e912 llvm::ValueMapper::remapInstruction(llvm::Instruction&) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x492e912)
#11 0x00000000058ca094 llvm::CloneIntoFunction(llvm::Function*, llvm::Function const*, std::vector<llvm::BasicBlock*, std::allocatorllvm::BasicBlock* >, llvm::ValueMap<llvm::Value const*, llvm::WeakTrackingVH, llvm::ValueMapConfig<llvm::Value const*, llvm::sys::SmartMutex > >&, bool, llvm::SmallVectorImplllvm::ReturnInst*&, llvm::StringRef, llvm::SmallPtrSetImplllvm::BasicBlock*, llvm::SmallPtrSetImplllvm::BasicBlock*, llvm::SmallPtrSetImplllvm::BasicBlock*, llvm::DISubprogram, llvm::ClonedCodeInfo*, llvm::ValueMapTypeRemapper*, llvm::OutlineMaterializer*) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x58ca094)
#12 0x00000000058ccde1 llvm::CreateHelper(llvm::SetVector<llvm::Value*, std::vector<llvm::Value*, std::allocatorllvm::Value* >, llvm::DenseSet<llvm::Value*, llvm::DenseMapInfollvm::Value* > > const&, llvm::SetVector<llvm::Value*, std::vector<llvm::Value*, std::allocatorllvm::Value* >, llvm::DenseSet<llvm::Value*, llvm::DenseMapInfollvm::Value* > > const&, std::vector<llvm::BasicBlock*, std::allocatorllvm::BasicBlock* >, llvm::BasicBlock*, llvm::BasicBlock const*, llvm::BasicBlock const*, llvm::ValueMap<llvm::Value const*, llvm::WeakTrackingVH, llvm::ValueMapConfig<llvm::Value const*, llvm::sys::SmartMutex > >&, llvm::Module*, bool, llvm::SmallVectorImplllvm::ReturnInst*&, llvm::StringRef, llvm::SmallPtrSetImplllvm::BasicBlock*, llvm::SmallPtrSetImplllvm::BasicBlock*, llvm::SmallPtrSetImplllvm::BasicBlock*, llvm::BasicBlock const, llvm::SmallPtrSetImplllvm::BasicBlock*, llvm::Type, llvm::ClonedCodeInfo*, llvm::ValueMapTypeRemapper*, llvm::OutlineMaterializer*) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x58ccde1)
#13 0x00000000058a6972 llvm::createHelperForTask(llvm::Function&, llvm::Task*, llvm::SetVector<llvm::Value*, std::vector<llvm::Value*, std::allocatorllvm::Value* >, llvm::DenseSet<llvm::Value*, llvm::DenseMapInfollvm::Value* > >&, llvm::Module*, llvm::ValueMap<llvm::Value const*, llvm::WeakTrackingVH, llvm::ValueMapConfig<llvm::Value const*, llvm::sys::SmartMutex > >&, llvm::Type*, llvm::AssumptionCache*, llvm::DominatorTree*) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x58a6972)
#14 0x00000000058a965d llvm::outlineTask(llvm::Task*, llvm::SetVector<llvm::Value*, std::vector<llvm::Value*, std::allocatorllvm::Value* >, llvm::DenseSet<llvm::Value*, llvm::DenseMapInfollvm::Value* > >&, llvm::SmallVectorImplllvm::Value*&, llvm::Module*, llvm::ValueMap<llvm::Value const*, llvm::WeakTrackingVH, llvm::ValueMapConfig<llvm::Value const*, llvm::sys::SmartMutex > >&, llvm::TapirTarget::ArgStructMode, llvm::Type*, llvm::ValueMap<llvm::Value const*, llvm::WeakTrackingVH, llvm::ValueMapConfig<llvm::Value const*, llvm::sys::SmartMutex > >&, llvm::AssumptionCache*, llvm::DominatorTree*) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x58a965d)
#15 0x00000000058d24ee TapirToTargetImpl::outlineAllTasks(llvm::Function&, llvm::SmallVectorImplllvm::Spindle*&, llvm::DominatorTree&, llvm::AssumptionCache&, llvm::TaskInfo&) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x58d24ee)
#16 0x00000000058d4b10 TapirToTargetImpl::processFunction(llvm::Function&, llvm::SmallVectorImplllvm::Function*&) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x58d4b10)
#17 0x00000000058d5453 TapirToTargetImpl::run() (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x58d5453)
#18 0x00000000058d5cae (anonymous namespace)::LowerTapirToTarget::runOnModule(llvm::Module&) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x58d5cae)
#19 0x00000000041304a0 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x41304a0)
#20 0x0000000004a0ea6b clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout const&, llvm::Module*, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_deletellvm::raw_pwrite_stream >) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x4a0ea6b)
#21 0x000000000519da15 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x519da15)
#22 0x0000000005fb74a3 clang::ParseAST(clang::Sema&, bool, bool) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x5fb74a3)
#23 0x00000000050ebd40 clang::FrontendAction::Execute() (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x50ebd40)
#24 0x0000000005048ad3 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x5048ad3)
#25 0x0000000005198130 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x5198130)
#26 0x0000000002b7e21d cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x2b7e21d)
#27 0x0000000002b7c1ec ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x2b7c1ec)
#28 0x0000000002b7bebb main (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x2b7bebb)
#29 0x00007f2585d6a0b3 __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:342:3
#30 0x0000000002b78fce _start (/home/ubuntu/OpenCilk-10.0.1-Linux/bin/clang-10+0x2b78fce)
clang-10: error: unable to execute command: Aborted (core dumped)
clang-10: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 10.0.1 ([email protected]:OpenCilk/opencilk-project.git 8435006)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/ubuntu/SSTGraph_public/../OpenCilk-10.0.1-Linux/bin
clang-10: note: diagnostic msg: PLEASE submit a bug report to https://github.com/OpenCilk/opencilk-project/issues and include the crash backtrace, preprocessed source, and associated run script.
clang-10: note: diagnostic msg:

---

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-10: note: diagnostic msg: /tmp/test-e5be17.cpp
clang-10: note: diagnostic msg: /tmp/test-e5be17.sh
clang-10: note: diagnostic msg:

---

[VoxSciurorum]

Can you upload the files mentioned at the end of the crash dump, test-e5be17.cpp and test-e5be17.sh?

[neboat]

This issue has been fixed in version 1.1.