[llvm-dev] Error running clang++ generated bitcode in lli

Leer Laar via llvm-dev llvm-dev at lists.llvm.org
Sat Aug 21 18:22:05 PDT 2021


I am trying to generate a bit code from a c++ source code and running it
through the just-in-time compiler. When I compile through the clang++ and
generate binary executable it runs perfectly but when I generated the
bitcode and tried running through the JIT with lli command it generated a
run-time error. Could you please help me understand what's going on.

For example: Let example.cpp contains the following code:

 #include <iostream>

 int main(){
    std::cout << "\nHello World!";
    return 0;
 }

I am using the following command to generate executable which runs
perfectly fine.

clang++ example.cpp

I am using the following command to generate the bitcode:

clang++ -S -emit-llvm example.cpp

And then running through the JIT using the following command which
generates run-time error:

lli example.ll

I am getting the following access violation error:

Stack dump:0.      Program arguments: lli example.ll
#0 0x00000000025fd9af llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/home/xpc/llvm/llvm-project1/llvm-project/llvm/lib/Support/Unix/Signals.inc:564:0
#1 0x00000000025fda42 PrintStackTraceSignalHandler(void*)
/home/xpc/llvm/llvm-project1/llvm-project/llvm/lib/Support/Unix/Signals.inc:625:0
#2 0x00000000025fb7ca llvm::sys::RunSignalHandlers()
/home/xpc/llvm/llvm-project1/llvm-project/llvm/lib/Support/Signals.cpp:68:0
#3 0x00000000025fd329 SignalHandler(int)
/home/xpc/llvm/llvm-project1/llvm-project/llvm/lib/Support/Unix/Signals.inc:406:0
#4 0x00007fa75dbdc390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)Segmentation fault
(core dumped)
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