Failed compilation leaves cling in a "bad state"

[eguiraud]

To Reproduce

The first line executed is invalid C++ code, and cling rightly complains. The second line is valid code, but cling does not seem to be able to compile it after the previous compilation failure. Opening a new ROOT prompt and directly inserting the valid code works fine.

~ root -l
root [0] ROOT::RDataFrame(10).Define("x", [] { return 42; }).Snapshot<int>("t", "f.root");
ROOT_prompt_0:1:53: error: no matching member function for call to 'Snapshot'
/*** snip ***/
root [1] ROOT::RDataFrame(10).Define("x", [] { return 42; }).Snapshot<int>("t", "f.root", {"x"});
IncrementalExecutor::executeFunction: symbol '_ZStanSt12memory_orderSt23__memory_order_modifier' unresolved while linking [cling interface function]!
You are probably missing the definition of std::operator&(std::memory_order, std::__memory_order_modifier)
Maybe you need to load the corresponding shared library?

Setup

ROOT master@3ae45ea5f9, RelWithDebInfo.
I could not reproduce with master@dcac6e1bf0, Debug build type.
The 6.22.02 conda package also seems to be affected.

[eguiraud]

Another reproducer:

~ root -l
root [0] Long32_t ba;
ROOT_prompt_0:1:9: error: expected ';' after expression
Long32_t ba;
        ^
        ;
ROOT_prompt_0:1:10: error: use of undeclared identifier 'ba'
Long32_t ba;
         ^
root [1] Long64_t ba;
root.exe: ../../../../../../../../root_dbg/interpreter/llvm/src/tools/clang/lib/Sema/SemaDecl.cpp:12576: clang::Decl* clang::Sema::ActOnFinishFunctionBody(clang::Decl*, clang::Stmt*, bool): Assertion `!Cleanup.exprNeedsCleanups() && "Unaccounted cleanups in function"' failed.

[jalopezg-git]

Thanks @eguiraud, I will take a look at this thing soon. Actually, I think these are two different problems, but we'll see...

[jalopezg-git]

Another reproducer:

~ root -l
root [0] Long32_t ba;
ROOT_prompt_0:1:9: error: expected ';' after expression
Long32_t ba;
        ^
        ;
ROOT_prompt_0:1:10: error: use of undeclared identifier 'ba'
Long32_t ba;
         ^
root [1] Long64_t ba;
root.exe: ../../../../../../../../root_dbg/interpreter/llvm/src/tools/clang/lib/Sema/SemaDecl.cpp:12576: clang::

As suspected, these were two different issues. The quoted issue was fixed in #9160. The original reported issue is to be investigated.

[eguiraud]

This is still a problem in 6.26.04:

root [0] ROOT::RDataFrame(10).Define("x", "42").Histo1D("x").DrawClone()
ROOT_prompt_0:1:52: error: no member named 'DrawClone' in 'ROOT::RDF::RResultPtr<TH1D>'; did you mean to use '->' instead of '.'?
ROOT::RDataFrame(10).Define("x", "42").Histo1D("x").DrawClone()
                                                   ^
                                                   ->
root [1] ROOT::RDataFrame(10).Define("x", "42").Histo1D("x")->DrawClone()
root.exe: /home/conda/feedstock_root/build_artifacts/root_base_1654795774398/work/root-source/interpreter/cling/lib/Interpreter/DynamicLibraryManagerSymbol.cpp:1187: std::string cling::Dyld::searchLibrariesForSymbol(llvm::StringRef, bool): Assertion `!llvm::sys::DynamicLibrary::SearchForAddressOfSymbol(mangledName) && "Library already loaded, please use dlsym!"' failed.

[jalopezg-git]

Thanks for the ping, @eguiraud! :-)

I had some work on a branch that fixes this and other related issues (grouped in #10049), but I still need to find the time to polish that code.

[eguiraud]

This is still present in v6.28.04 (LLVM 13) but the error is much more verbose:

/tmp root -l
root [0] ROOT::RDataFrame(10).Define("x", "42").Histo1D("x").DrawClone()
ROOT_prompt_0:1:52: error: no member named 'DrawClone' in 'ROOT::RDF::RResultPtr<TH1D>'; did you mean to use '->' instead of '.'?
ROOT::RDataFrame(10).Define("x", "42").Histo1D("x").DrawClone()
                                                   ^
                                                   ->
root [1] ROOT::RDataFrame(10).Define("x", "42").Histo1D("x")->DrawClone()
IncrementalExecutor::executeFunction: symbol '_ZSt4swapIP4TH1DENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS5_ESt18is_move_assignableIS5_EEE5valueEvE4typeERS5_SE_' unresolved while linking [cling interface function]!
You are probably missing the definition of std::enable_if<__and_<std::__not_<std::__is_tuple_like<TH1D*> >, std::is_move_constructible<TH1D*>, std::is_move_assignable<TH1D*> >::value, void>::type std::swap<TH1D*>(TH1D*&, TH1D*&)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZSt11make_sharedIN4ROOT8Internal3RDF13RJittedActionEJRNS0_6Detail3RDF12RLoopManagerERKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaISE_EERNS2_15RColumnRegisterESI_EESt10shared_ptrINSt9enable_ifIXntsr8is_arrayIT_EE5valueESN_E4typeEEDpOT0_' unresolved while linking [cling interface function]!
You are probably missing the definition of std::shared_ptr<std::enable_if<!is_array<ROOT::Internal::RDF::RJittedAction>::value, ROOT::Internal::RDF::RJittedAction>::type> std::make_shared<ROOT::Internal::RDF::RJittedAction, ROOT::Detail::RDF::RLoopManager&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, ROOT::Internal::RDF::RColumnRegister&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&>(ROOT::Detail::RDF::RLoopManager&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, ROOT::Internal::RDF::RColumnRegister&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZSt4moveIRSt10shared_ptrIN4ROOT6Detail3RDF13RJittedDefineEEEONSt16remove_referenceIT_E4typeEOS8_' unresolved while linking [cling interface function]!
You are probably missing the definition of std::remove_reference<std::shared_ptr<ROOT::Detail::RDF::RJittedDefine>&>::type&& std::move<std::shared_ptr<ROOT::Detail::RDF::RJittedDefine>&>(std::shared_ptr<ROOT::Detail::RDF::RJittedDefine>&)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZSt4moveIRN4ROOT8Internal3RDF15RColumnRegisterEEONSt16remove_referenceIT_E4typeEOS6_' unresolved while linking [cling interface function]!
You are probably missing the definition of std::remove_reference<ROOT::Internal::RDF::RColumnRegister&>::type&& std::move<ROOT::Internal::RDF::RColumnRegister&>(ROOT::Internal::RDF::RColumnRegister&)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZSt4moveIRKSt10shared_ptrIN4ROOT8Internal3RDF13RJittedActionEEEONSt16remove_referenceIT_E4typeEOS9_' unresolved while linking [cling interface function]!
You are probably missing the definition of std::remove_reference<std::shared_ptr<ROOT::Internal::RDF::RJittedAction> const&>::type&& std::move<std::shared_ptr<ROOT::Internal::RDF::RJittedAction> const&>(std::shared_ptr<ROOT::Internal::RDF::RJittedAction> const&)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZN4ROOT8Internal3RDF14MakeWeakOnHeapINS1_13RJittedActionEEEPSt8weak_ptrIT_ERKSt10shared_ptrIS5_E' unresolved while linking [cling interface function]!
You are probably missing the definition of std::weak_ptr<ROOT::Internal::RDF::RJittedAction>* ROOT::Internal::RDF::MakeWeakOnHeap<ROOT::Internal::RDF::RJittedAction>(std::shared_ptr<ROOT::Internal::RDF::RJittedAction> const&)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZN4ROOT8Internal3RDF16MakeSharedOnHeapI4TH1DEEPSt10shared_ptrIT_ERKS6_' unresolved while linking [cling interface function]!
You are probably missing the definition of std::shared_ptr<TH1D>* ROOT::Internal::RDF::MakeSharedOnHeap<TH1D>(std::shared_ptr<TH1D> const&)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZN4ROOT6Detail3RDF13MakeResultPtrI4TH1DEENS_3RDF10RResultPtrIT_EERKSt10shared_ptrIS6_ERNS1_12RLoopManagerES8_INS_8Internal3RDF11RActionBaseEE' unresolved while linking [cling interface function]!
You are probably missing the definition of ROOT::RDF::RResultPtr<TH1D> ROOT::Detail::RDF::MakeResultPtr<TH1D>(std::shared_ptr<TH1D> const&, ROOT::Detail::RDF::RLoopManager&, std::shared_ptr<ROOT::Internal::RDF::RActionBase>)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZSteqI4TH1DEbRKSt10shared_ptrIT_EDn' unresolved while linking [cling interface function]!
You are probably missing the definition of bool std::operator==<TH1D>(std::shared_ptr<TH1D> const&, decltype(nullptr))
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZN4ROOT8Internal3RDF16MakeSharedOnHeapINS_6Detail3RDF9RNodeBaseEEEPSt10shared_ptrIT_ERKS8_' unresolved while linking [cling interface function]!
You are probably missing the definition of std::shared_ptr<ROOT::Detail::RDF::RNodeBase>* ROOT::Internal::RDF::MakeSharedOnHeap<ROOT::Detail::RDF::RNodeBase>(std::shared_ptr<ROOT::Detail::RDF::RNodeBase> const&)
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZStneIN4ROOT8Internal3RDF11RActionBaseEEbRKSt10shared_ptrIT_EDn' unresolved while linking [cling interface function]!
You are probably missing the definition of bool std::operator!=<ROOT::Internal::RDF::RActionBase>(std::shared_ptr<ROOT::Internal::RDF::RActionBase> const&, decltype(nullptr))
Maybe you need to load the corresponding shared library?
root [2]