Undefined symbol

[aiglematth]

Hello !

To begin, thanks for your super repo !
I have some troubles with running the HelloWorld example pass... By following your tutorial I am doing this :

(orc) root[0]/r/testzone > cd llvm-tutor/
(orc) root[0]/r/t/llvm-tutor > export LLVM_DIR=/root/orchestra/root/lib64/llvm/llvm
(orc) root[0]/r/t/llvm-tutor > mkdir build
                               cd build
                               cmake -DLT_LLVM_INSTALL_DIR=$LLVM_DIR ../HelloWorld/
                               make
-- The C compiler identification is GNU 11.2.0
-- The CXX compiler identification is GNU 11.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /root/orchestra/root/link-only/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /root/orchestra/root/link-only/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found ZLIB: /root/orchestra/root/lib64/libz.so (found version "1.2.11")
-- Configuring done
-- Generating done
-- Build files have been written to: /root/testzone/llvm-tutor/build
[ 50%] Building CXX object CMakeFiles/HelloWorld.dir/HelloWorld.cpp.o
[100%] Linking CXX shared library libHelloWorld.so
[100%] Built target HelloWorld
(orc) root[0]/r/t/l/build > $LLVM_DIR/bin/clang -O1 -S -emit-llvm ../inputs/input_for_hello.c -o input_for_hello.ll
(orc) root[0]/r/t/l/build >
(orc) root[134]/r/t/l/build > $LLVM_DIR/bin/opt -load-pass-plugin ./libHelloWorld.so -passes=hello-world -disable-output
 input_for_hello.ll
Failed to load passes from './libHelloWorld.so'. Request ignored.
Expected<T> must be checked before access or destruction.
Unchecked Expected<T> contained error:
Could not load library './libHelloWorld.so': ./libHelloWorld.so: undefined symbol: _ZNK4llvm12FunctionPass17createPrinterPassERNS_11raw_ostreamERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: /root/orchestra/root/lib64/llvm/llvm/bin/opt -load-pass-plugin ./libHelloWorld.so -passes=hello-world -disable-output input_for_hello.ll
 #0 0x00007f42457c4a5e llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/Unix/Signals.inc:570:13
 #1 0x00007f42457c2dc4 llvm::sys::RunSignalHandlers() /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/Signals.cpp:105:18
 #2 0x00007f42457c4fcd SignalHandler(int) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/Unix/Signals.inc:415:1
 #3 0x00007f4245205520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007f4245259a7c __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #5 0x00007f4245259a7c __pthread_kill_internal ./nptl/pthread_kill.c:78:10
 #6 0x00007f4245259a7c pthread_kill ./nptl/pthread_kill.c:89:10
 #7 0x00007f4245205476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #8 0x00007f42451eb7f3 abort ./stdlib/abort.c:81:7
 #9 0x000055c33f5d4c11 llvm::raw_ostream::operator<<(llvm::StringRef) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/include/llvm/Support/raw_ostream.h:220:7
#10 0x000055c33f5d4c11 llvm::raw_ostream::operator<<(char const*) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/include/llvm/Support/raw_ostream.h:244:18
#11 0x000055c33f5d4c11 llvm::Expected<llvm::PassPlugin>::fatalUncheckedExpected() const /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/include/llvm/Support/Error.h:704:14
#12 0x000055c33f5d0d98 (/root/orchestra/root/lib64/llvm/llvm/bin/opt+0x2ad98)
#13 0x000055c33f5d2bfb std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>::__is_long[abi:v160001]() const /builds/gitlab/revng/orchestra/orchestra/root/lib64/llvm/clang-release/bin/../include/c++/v1/string:1682:16
#14 0x000055c33f5d2bfb std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>::~basic_string() /builds/gitlab/revng/orchestra/orchestra/root/lib64/llvm/clang-release/bin/../include/c++/v1/string:2361:9
#15 0x000055c33f5d2bfb llvm::cl::list<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, bool, llvm::cl::parser<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>>::handleOccurrence(unsigned int, llvm::StringRef, llvm::StringRef) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/include/llvm/Support/CommandLine.h:1673:3
#16 0x00007f42456da45d ProvideOption(llvm::cl::Option*, llvm::StringRef, llvm::StringRef, int, char const* const*, int&) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/CommandLine.cpp:708:1
#17 0x00007f42456de4ef (anonymous namespace)::CommandLineParser::ParseCommandLineOptions(int, char const* const*, llvm::StringRef, llvm::raw_ostream*, bool) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/CommandLine.cpp:1714:23
#18 0x00007f42456de4ef llvm::cl::ParseCommandLineOptions(int, char const* const*, llvm::StringRef, llvm::raw_ostream*, char const*, bool) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/CommandLine.cpp:1470:24
#19 0x000055c33f5ce47a main /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/tools/opt/opt.cpp:0:3
#20 0x00007f42451ecd90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#21 0x00007f42451ece40 call_init ./csu/../csu/libc-start.c:128:20
#22 0x00007f42451ece40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#23 0x000055c33f5bf379 _start (/root/orchestra/root/lib64/llvm/llvm/bin/opt+0x19379)
fish: Job 1, '$LLVM_DIR/bin/opt -load-pass-pl…' terminated by signal SIGABRT (Abort)

I saw this problem in a stackoverflow post. It was an ABI match problem. The user had solve it by inserting the _GLIBCXX_USE_CXX11_ABI=0 compilation option...In my case doing that let me fall in another symbol problem :

(orc) root[0]/r/t/l/build > $LLVM_DIR/bin/opt -load-pass-plugin ./libHelloWorld.so -passes=hello-world -disable-output i
nput_for_hello.ll
Failed to load passes from './libHelloWorld.so'. Request ignored.
Expected<T> must be checked before access or destruction.
Unchecked Expected<T> contained error:
Could not load library './libHelloWorld.so': ./libHelloWorld.so: undefined symbol: _ZNK4llvm12FunctionPass17createPrinterPassERNS_11raw_ostreamERKSsPLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: /root/orchestra/root/lib64/llvm/llvm/bin/opt -load-pass-plugin ./libHelloWorld.so -passes=hello-world -disable-output input_for_hello.ll
 #0 0x00007fd15505ea5e llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/Unix/Signals.inc:570:13
 #1 0x00007fd15505cdc4 llvm::sys::RunSignalHandlers() /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/Signals.cpp:105:18
 #2 0x00007fd15505efcd SignalHandler(int) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/Unix/Signals.inc:415:1
 #3 0x00007fd154a9f520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007fd154af3a7c __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #5 0x00007fd154af3a7c __pthread_kill_internal ./nptl/pthread_kill.c:78:10
 #6 0x00007fd154af3a7c pthread_kill ./nptl/pthread_kill.c:89:10
 #7 0x00007fd154a9f476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #8 0x00007fd154a857f3 abort ./stdlib/abort.c:81:7
 #9 0x000055e011ed3c11 llvm::raw_ostream::operator<<(llvm::StringRef) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/include/llvm/Support/raw_ostream.h:220:7
#10 0x000055e011ed3c11 llvm::raw_ostream::operator<<(char const*) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/include/llvm/Support/raw_ostream.h:244:18
#11 0x000055e011ed3c11 llvm::Expected<llvm::PassPlugin>::fatalUncheckedExpected() const /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/include/llvm/Support/Error.h:704:14
#12 0x000055e011ecfd98 (/root/orchestra/root/lib64/llvm/llvm/bin/opt+0x2ad98)
#13 0x000055e011ed1bfb std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>::__is_long[abi:v160001]() const /builds/gitlab/revng/orchestra/orchestra/root/lib64/llvm/clang-release/bin/../include/c++/v1/string:1682:16
#14 0x000055e011ed1bfb std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>::~basic_string() /builds/gitlab/revng/orchestra/orchestra/root/lib64/llvm/clang-release/bin/../include/c++/v1/string:2361:9
#15 0x000055e011ed1bfb llvm::cl::list<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, bool, llvm::cl::parser<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>>::handleOccurrence(unsigned int, llvm::StringRef, llvm::StringRef) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/include/llvm/Support/CommandLine.h:1673:3
#16 0x00007fd154f7445d ProvideOption(llvm::cl::Option*, llvm::StringRef, llvm::StringRef, int, char const* const*, int&) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/CommandLine.cpp:708:1
#17 0x00007fd154f784ef (anonymous namespace)::CommandLineParser::ParseCommandLineOptions(int, char const* const*, llvm::StringRef, llvm::raw_ostream*, bool) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/CommandLine.cpp:1714:23
#18 0x00007fd154f784ef llvm::cl::ParseCommandLineOptions(int, char const* const*, llvm::StringRef, llvm::raw_ostream*, char const*, bool) /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/lib/Support/CommandLine.cpp:1470:24
#19 0x000055e011ecd47a main /builds/gitlab/revng/orchestra/orchestra/sources/llvm-project/llvm/tools/opt/opt.cpp:0:3
#20 0x00007fd154a86d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#21 0x00007fd154a86e40 call_init ./csu/../csu/libc-start.c:128:20
#22 0x00007fd154a86e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#23 0x000055e011ebe379 _start (/root/orchestra/root/lib64/llvm/llvm/bin/opt+0x19379)
fish: Job 1, '$LLVM_DIR/bin/opt -load-pass-pl…' terminated by signal SIGABRT (Abort)

Some other issues in other projects (sampsyo/llvm-pass-skeleton#12) give some solutions...which are not working for me.

My setup is :

(orc) root[0]/r/t/l/build > $LLVM_DIR/bin/opt --version
LLVM (http://llvm.org/):
  LLVM version 16.0.1
  Optimized build with assertions.
  Default target: x86_64-unknown-linux-gnu
  Host CPU: skylake

If you have any suggestions, I take 😄

Have a nice day.

[banach-space]

Thanks for reporting and sorry for not getting back to you earlier. It's been a rather busy period for me.

I don't see anything "obvious" in your example that would lead to a crash. I need to try to reproduce it and see what happens. Hoping to do so at some point this week 🤞🏻 .

[aiglematth]

Thanks for reporting and sorry for not getting back to you earlier. It's been a rather busy period for me.

I don't see anything "obvious" in your example that would lead to a crash. I need to try to reproduce it and see what happens. Hoping to do so at some point this week 🤞🏻 .

Thanks ! I finally found the problem : I had two llvm versions which were conflicting.