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TFormula refactor C++03 to C++11 #9
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Finally ready to merge, i dropped some commits because I had a lot of conflicts, maybe i'll try to recommit them later. |
lmoneta
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Feb 6, 2018
In the example below, thread #11 is waiting on the ‘AppKit lock’ while thread #1 is waiting on the ROOT read lock and thread #12 is waiting on the ROOT write lock. In thread #11, the ROOT write lock is taken/held by frame #9, TCanvas::Update, to ‘serialize’ the update to the windowing system. In thread #1, the ‘AppKit lock’ is likely taken/held by a frame in the #16 to root-project#40 range. This commit remove the dead lock by removing the unnecessary use of code needing the ROOT lock within code run under the AppKit lock so that in they case thread #1 no longer need to wait for the ROOT (read) lock. In addition it should be investigated whether the ROOT (write) lock should be taken in thread #1, frame 1 (TMacOSXSystem::ProcessPendingEvents) for the same reason it is taken in TCanvas::Update. thread #11 frame #0: 0x00007fffab109bf2 libsystem_kernel.dylib`__psynch_cvwait + 10 frame #1: 0x00007fffab1f57fa libsystem_pthread.dylib`_pthread_cond_wait + 712 frame #2: 0x00007fff93394e34 AppKit`-[NSViewHierarchyLock lockForReadingWithExceptionHandler:] + 287 frame #3: 0x00007fff934948ae AppKit`-[NSWindow _copyAcquiredViewHierarchyLock] + 126 frame #4: 0x00007fff9349442c AppKit`-[NSView lockFocusIfCanDraw] + 159 frame #5: 0x000000011c09063d libGCocoa.so`ROOT::MacOSX::X11::CommandBuffer::Flush(this=0x0000000100dbb080, impl=0x0000000100dbb000) at X11Buffer.mm:550 frame #6: 0x000000011c04e9c4 libGCocoa.so`TGCocoa::Update(this=0x0000000100ad1bc0, mode=1) at TGCocoa.mm:536 frame #7: 0x000000011c04ff3e libGCocoa.so`TGCocoa::UpdateWindow(this=0x0000000100ad1bc0, (null)=1) at TGCocoa.mm:776 frame #8: 0x000000011ad70827 libGpad.so`TCanvas::Flush(this=0x000000012274e740) at TCanvas.cxx:1096 frame #9: 0x000000011ad7830f libGpad.so`TCanvas::Update(this=0x000000012274e740) at TCanvas.cxx:2287 frame #10: 0x0000000100fe4e86 threadsh2_C.so`handle2((null)=0x0000000000000001) at threadsh2.C:105 frame #11: 0x0000000100f55680 libThread.so`TThread::Function(ptr=0x0000000122753b00) at TThread.cxx:821 frame #12: 0x00007fffab1f493b libsystem_pthread.dylib`_pthread_body + 180 frame #13: 0x00007fffab1f4887 libsystem_pthread.dylib`_pthread_start + 286 frame #14: 0x00007fffab1f408d libsystem_pthread.dylib`thread_start + 13 thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP frame #0: 0x00007fffab109bf2 libsystem_kernel.dylib`__psynch_cvwait + 10 frame #1: 0x00007fffab1f57fa libsystem_pthread.dylib`_pthread_cond_wait + 712 frame #2: 0x00007fffa9b734cd libc++.1.dylib`std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 frame #3: 0x0000000100f76b6f libThread.so`void std::__1::condition_variable_any::wait<std::__1::unique_lock<std::__1::mutex> >(this=0x0000000122753a28, __lock=0x00007fff5fbf5cf8) at condition_variable:202 frame #4: 0x0000000100f6887e libThread.so`ROOT::TReentrantRWLock<std::__1::mutex, ROOT::Internal::RecurseCounts>::ReadLock() [inlined] void std::__1::condition_variable_any::wait<std::__1::unique_lock<std::__1::mutex>, ROOT::TReentrantRWLock<std::__1::mutex, ROOT::Internal::RecurseCounts>::ReadLock()::'lambda'()>(this=0x0000000122753a28, __lock=0x00007fff5fbf5cf8, __pred=(anonymous class) @ 0x00007fff5fbf5e08)::'lambda'()) at condition_variable:211 frame #5: 0x0000000100f68857 libThread.so`ROOT::TReentrantRWLock<std::__1::mutex, ROOT::Internal::RecurseCounts>::ReadLock(this=0x00000001227539d8) at TReentrantRWLock.cxx:95 frame #6: 0x0000000100f5c719 libThread.so`ROOT::TRWMutexImp<std::__1::mutex, ROOT::Internal::RecurseCounts>::ReadLock(this=0x00000001227539d0) at TRWMutexImp.cxx:33 frame #7: 0x00000001000f52d1 libCore.so`ROOT::TReadLockGuard::TReadLockGuard(this=0x00007fff5fbf5f48, mutex=0x00000001227539d0) at TVirtualRWMutex.h:89 frame #8: 0x00000001000f275d libCore.so`ROOT::TReadLockGuard::TReadLockGuard(this=0x00007fff5fbf5f48, mutex=0x00000001227539d0) at TVirtualRWMutex.h:88 frame #9: 0x00000001002fcebf libCore.so`THashTable::FindObject(this=0x0000000100b0e120, name="TGTextView") const at THashTable.cxx:242 frame #10: 0x00000001003a67fd libCore.so`TClass::GetClass(name="TGTextView", load=true, silent=true) at TClass.cxx:2900 frame #11: 0x00000001003c9e16 libCore.so`TClass::InheritsFrom(this=0x0000000118fe1250, classname="TGTextView") const at TClass.cxx:4683 frame #12: 0x000000010024cb6e libCore.so`TObject::InheritsFrom(this=0x0000000126908de0, classname="TGTextView") const at TObject.cxx:445 frame #13: 0x000000011c03e47f libGCocoa.so`ROOT::MacOSX::X11::ViewIsTextView(viewID=116) at QuartzWindow.mm:899 frame #14: 0x000000011c03e518 libGCocoa.so`ROOT::MacOSX::X11::ViewIsTextView(view=0x0000000126908ee0) at QuartzWindow.mm:907 frame #15: 0x000000011c04706c libGCocoa.so`::-[QuartzView drawRect:](self=0x0000000126908ee0, _cmd="drawRect:", dirtyRect=(origin = (x = 0, y = 0), size = (width = 29, height = 21))) at QuartzWindow.mm:2728 frame #16: 0x00007fff934a4f99 AppKit`-[NSView _drawRect:clip:] + 2276 frame #17: 0x00007fff934f4f2f AppKit`-[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1753 frame #18: 0x00007fff934f539a AppKit`-[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2884 frame #19: 0x00007fff934f539a AppKit`-[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2884 frame #20: 0x00007fff934f539a AppKit`-[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2884 frame #21: 0x00007fff934a2ad2 AppKit`-[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 837 frame #22: 0x00007fff934a22af AppKit`-[NSThemeFrame _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 334 frame #23: 0x00007fff934a06d8 AppKit`-[NSView _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] + 2452 frame #24: 0x00007fff9349bfca AppKit`-[NSView displayIfNeeded] + 1748 frame #25: 0x00007fff9349b8db AppKit`-[NSWindow displayIfNeeded] + 230 frame #26: 0x00007fff93bfbcb4 AppKit`___NSWindowGetDisplayCycleObserver_block_invoke.6228 + 277 frame #27: 0x00007fff9349b3b9 AppKit`__37+[NSDisplayCycle currentDisplayCycle]_block_invoke + 454 frame #28: 0x00007fff9b384cc6 QuartzCore`CA::Transaction::run_commit_handlers(CATransactionPhase) + 46 frame #29: 0x00007fff9b48e8ac QuartzCore`CA::Context::commit_transaction(CA::Transaction*) + 160 frame root-project#30: 0x00007fff9b3837a1 QuartzCore`CA::Transaction::commit() + 475 frame root-project#31: 0x00007fff9377e8b1 AppKit`__37+[NSDisplayCycle currentDisplayCycle]_block_invoke.31 + 323 frame root-project#32: 0x00007fff95874d37 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23 frame root-project#33: 0x00007fff95874ca7 CoreFoundation`__CFRunLoopDoObservers + 391 frame root-project#34: 0x00007fff958556d9 CoreFoundation`__CFRunLoopRun + 873 frame root-project#35: 0x00007fff95855114 CoreFoundation`CFRunLoopRunSpecific + 420 frame root-project#36: 0x00007fff94db5ebc HIToolbox`RunCurrentEventLoopInMode + 240 frame root-project#37: 0x00007fff94db5bf9 HIToolbox`ReceiveNextEventCommon + 184 frame root-project#38: 0x00007fff94db5b26 HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 71 frame root-project#39: 0x00007fff9334ca54 AppKit`_DPSNextEvent + 1120 frame root-project#40: 0x00007fff93ac87ee AppKit`-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2796 frame root-project#41: 0x0000000100491031 libCore.so`TMacOSXSystem::ProcessPendingEvents(this=0x0000000100c06d60) at TMacOSXSystem.mm:473 frame root-project#42: 0x000000010049097d libCore.so`TMacOSXSystem::DispatchOneEvent(this=0x0000000100c06d60, pendingOnly=true) at TMacOSXSystem.mm:365 frame root-project#43: 0x0000000100294f4b libCore.so`TSystem::ProcessEvents(this=0x0000000100c06d60) at TSystem.cxx:429 frame root-project#44: 0x0000000100fe5844 threadsh2_C.so`threadsh2() at threadsh2.C:196 frame root-project#45: 0x0000000100fec06a frame root-project#46: 0x0000000103d7dc2f libCling.so`cling::IncrementalExecutor::executeWrapper(this=0x0000000100a1d410, function=(Data = "_Z15__cling_Un1Qu30Pv", Length = 21), returnValue=0x00007fff5fbfbde0) at IncrementalExecutor.h:196 frame root-project#47: 0x0000000103d7db1f libCling.so`cling::Interpreter::RunFunction(this=0x0000000100a0e3b0, FD=0x000000011780f6b0, res=0x00007fff5fbfbde0) at Interpreter.cpp:980 frame root-project#48: 0x0000000103d7a92a libCling.so`cling::Interpreter::EvaluateInternal(this=0x0000000100a0e3b0, input="threadsh2()", CO=CompilationOptions @ 0x00007fff5fbfaae8, V=0x00007fff5fbfbde0, T=0x0000000000000000, wrapPoint=44) at Interpreter.cpp:1232 frame root-project#49: 0x0000000103d79e27 libCling.so`cling::Interpreter::process(this=0x0000000100a0e3b0, input="threadsh2()", V=0x00007fff5fbfbde0, T=0x0000000000000000, disableValuePrinting=false) at Interpreter.cpp:684 frame root-project#50: 0x0000000103e552a5 libCling.so`cling::MetaProcessor::process(this=0x0000000100b65aa0, input_line=(Data = "threadsh2()", Length = 11), compRes=0x00007fff5fbfb540, result=0x00007fff5fbfbde0, disableValuePrinting=false) at MetaProcessor.cpp:341 frame root-project#51: 0x000000010397bd63 libCling.so`HandleInterpreterException(metaProcessor=0x0000000100b65aa0, input_line="threadsh2()", compRes=0x00007fff5fbfb540, result=0x00007fff5fbfbde0) at TCling.cxx:2053 frame root-project#52: 0x000000010397a16e libCling.so`TCling::ProcessLine(this=0x0000000100a0de40, line=".X /opt/build/root_builds/master.debug/tutorials/thread/./threadsh2.C+", error=0x00007fff5fbfd694) at TCling.cxx:2170 frame root-project#53: 0x0000000103984436 libCling.so`TCling::ProcessLineSynch(this=0x0000000100a0de40, line=".X /opt/build/root_builds/master.debug/tutorials/thread/./threadsh2.C+", error=0x00007fff5fbfd694) at TCling.cxx:3044 frame root-project#54: 0x00000001001f3133 libCore.so`TApplication::ExecuteFile(file="threadsh2.C+", error=0x00007fff5fbfd694, keep=false) at TApplication.cxx:1143 frame root-project#55: 0x00000001001f19e0 libCore.so`TApplication::ProcessFile(this=0x0000000100b113e0, file="threadsh2.C+", error=0x00007fff5fbfd694, keep=false) at TApplication.cxx:1015 frame root-project#56: 0x00000001001f138f libCore.so`TApplication::ProcessLine(this=0x0000000100b113e0, line=".x threadsh2.C+", sync=false, err=0x00007fff5fbfd694) at TApplication.cxx:988 frame root-project#57: 0x000000010009878d libRint.so`TRint::ProcessLineNr(this=0x0000000100b113e0, filestem="ROOT_cli_", line=".x threadsh2.C+", error=0x00007fff5fbfd694) at TRint.cxx:756 frame root-project#58: 0x0000000100097daf libRint.so`TRint::Run(this=0x0000000100b113e0, retrn=false) at TRint.cxx:416 frame root-project#59: 0x00000001000027a4 root.exe`main(argc=1, argv=0x00007fff5fbff780) at rmain.cxx:30 frame root-project#60: 0x00007fffaafdb235 libdyld.dylib`start + 1 thread #12 frame #0: 0x00007fffab109bf2 libsystem_kernel.dylib`__psynch_cvwait + 10 frame #1: 0x00007fffab1f57fa libsystem_pthread.dylib`_pthread_cond_wait + 712 frame #2: 0x00007fffa9b734cd libc++.1.dylib`std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 frame #3: 0x0000000100f76b6f libThread.so`void std::__1::condition_variable_any::wait<std::__1::unique_lock<std::__1::mutex> >(this=0x0000000122753a28, __lock=0x0000700009f18898) at condition_variable:202 frame #4: 0x0000000100f697b4 libThread.so`ROOT::TReentrantRWLock<std::__1::mutex, ROOT::Internal::RecurseCounts>::WriteLock() [inlined] void std::__1::condition_variable_any::wait<std::__1::unique_lock<std::__1::mutex>, ROOT::TReentrantRWLock<std::__1::mutex, ROOT::Internal::RecurseCounts>::WriteLock()::'lambda'()>(this=0x0000000122753a28, __lock=0x0000700009f18898, __pred=(anonymous class) @ 0x0000700009f18a28)::'lambda'()) at condition_variable:211 frame #5: 0x0000000100f69790 libThread.so`ROOT::TReentrantRWLock<std::__1::mutex, ROOT::Internal::RecurseCounts>::WriteLock(this=0x00000001227539d8) at TReentrantRWLock.cxx:175 frame #6: 0x0000000100f5c779 libThread.so`ROOT::TRWMutexImp<std::__1::mutex, ROOT::Internal::RecurseCounts>::WriteLock(this=0x00000001227539d0) at TRWMutexImp.cxx:42 frame #7: 0x0000000100f57df6 libThread.so`ROOT::TVirtualRWMutex::Lock(this=0x00000001227539d0) at TVirtualRWMutex.h:52 frame #8: 0x00000001039b2dd9 libCling.so`TLockGuard::TLockGuard(this=0x0000700009f18b48, mutex=0x00000001227539d0) at TVirtualMutex.h:85 frame #9: 0x000000010397ba8d libCling.so`TLockGuard::TLockGuard(this=0x0000700009f18b48, mutex=0x00000001227539d0) at TVirtualMutex.h:85 frame #10: 0x00000001039aa152 libCling.so`TCling::ClassInfo_Factory(this=0x0000000100a0de40, all=true) const at TCling.cxx:7216 frame #11: 0x00000001004150ba libCore.so`TMethodCall::Init(this=0x0000700009f18d80, cl=0x0000000100af0470, method="Print", params="", objectIsConst=false) at TMethodCall.cxx:259 frame #12: 0x0000000100414ff3 libCore.so`TMethodCall::TMethodCall(this=0x0000700009f18d80, cl=0x0000000100af0470, method="Print", params="") at TMethodCall.cxx:62 frame #13: 0x000000010041519d libCore.so`TMethodCall::TMethodCall(this=0x0000700009f18d80, cl=0x0000000100af0470, method="Print", params="") at TMethodCall.cxx:61 frame #14: 0x0000000100fe471a threadsh2_C.so`handle1((null)=0x0000000000000000) at threadsh2.C:48 frame #15: 0x0000000100f55680 libThread.so`TThread::Function(ptr=0x0000000122754790) at TThread.cxx:821 frame #16: 0x00007fffab1f493b libsystem_pthread.dylib`_pthread_body + 180 frame #17: 0x00007fffab1f4887 libsystem_pthread.dylib`_pthread_start + 286 frame #18: 0x00007fffab1f408d libsystem_pthread.dylib`thread_start + 13
lmoneta
pushed a commit
that referenced
this pull request
Oct 24, 2018
…transactions. This fixes https://sft.its.cern.ch/jira/browse/ROOT-9672 by having cling::Interpreter::DeclareCFunction return the transaction containing the compiled code. With the previous code, cling::Interpreter::compileFunction will get confused by transaction created during the callbacks executed during the cling::IncrementalParser::commitTransaction of the main transaction. Reproducer: With a main composed of 'only': int main(int argc, char ** argv) { char const * class_string = (argc == 2) ? argv[1] : "std::vector<int>"; auto const result [[gnu::unused]] = TClass::GetClass(class_string); return 0; } which is a representation of real use case (in a more complex setup) in ART. We were getting: Error in <TClingCallFunc::make_wrapper>: Failed to compile ==== SOURCE BEGIN ==== #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wformat-security" __attribute__((used)) extern "C" void __cf_0(void* obj, int nargs, void** args, void* ret) { if (ret) { (*(TStreamerInfo**)ret) = new TStreamerInfo(); return; } else { new TStreamerInfo(); return; } } #pragma clang diagnostic pop ==== SOURCE END ==== Error in <TClingCallFunc::ExecT>: Called with no wrapper, not implemented! Error in <TVirtualStreamerInfo::Factory>: The plugin handler for TVirtualStreamerInfo was found but failed to create the factory object! The reason is that during TClingCallFunc::make_wrapper, the call to cling::Interpreter::compileFunction ends with: if (const llvm::GlobalValue* GV = getLastTransaction()->getModule()->getNamedValue(name)) However in the 'broken' case, the getLastTransaction does not return the transaction for the code being compiled by DeclareCFunction but instead the one used/created at: #0 cling::IncrementalParser::endTransaction (this=0x4a2980, T=0x8c0fb0) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/IncrementalParser.cpp:345 #1 0x00007fffeebc7899 in cling::Interpreter::PushTransactionRAII::pop (this=0x7fffffffcb00) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/Interpreter.cpp:111 #2 0x00007fffeebc785e in cling::Interpreter::PushTransactionRAII::~PushTransactionRAII (this=0x7fffffffcb00, __in_chrg=<optimized out>) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/Interpreter.cpp:106 #3 0x00007fffeebeb659 in cling::LookupHelper::findScope (this=0x4a9dd0, className=..., diagOnOff=cling::LookupHelper::NoDiagnostics, resultType=0x7fffffffcd08, instantiateTemplate=false) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/LookupHelper.cpp:466 #4 0x00007fffeeabe0df in TCling::CheckClassInfo (this=0x4a0550, name=<optimized out>, autoload=<optimized out>, isClassOrNamespaceOnly=<optimized out>) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/metacling/src/TCling.cxx:3630 #5 0x00007ffff7c3040d in TClass::Init (this=this@entry=0xdafd20, name=name@entry=0x7ffff7cb7638 "TGlobal", cversion=cversion@entry=2, typeinfo=typeinfo@entry=0x7ffff7d8b6d8 <typeinfo for TGlobal>, isa=isa@entry=0x477430, dfil=dfil@entry=0x7ffff7cb8cab "TGlobal.h", ifil=<optimized out>, dl=<optimized out>, il=<optimized out>, givenInfo=<optimized out>, silent=<optimized out>) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TClass.cxx:1431 #6 0x00007ffff7c3a1b8 in TClass::TClass (this=0xdafd20, name=0x7ffff7cb7638 "TGlobal", cversion=<optimized out>, info=..., isa=0x477430, dfil=0x7ffff7cb8cab "TGlobal.h", ifil=0x7ffff7cccf88 "/local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TGlobal.cxx", dl=27, il=25, silent=false) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TClass.cxx:1273 #7 0x00007ffff7c3a72a in ROOT::CreateClass (cname=0x7ffff7cb7638 "TGlobal", id=id@entry=2, info=..., isa=isa@entry=0x477430, dfil=dfil@entry=0x7ffff7cb8cab "TGlobal.h", ifil=ifil@entry=0x7ffff7cccf88 "/local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TGlobal.cxx", dl=27, il=25) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TClass.cxx:5607 #8 0x00007ffff7c4b552 in ROOT::Internal::TDefaultInitBehavior::CreateClass (il=25, dl=27, ifil=0x7ffff7cccf88 "/local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TGlobal.cxx", dfil=0x7ffff7cb8cab "TGlobal.h", isa=0x477430, info=..., id=2, cname=<optimized out>, this=0x7ffff7da7508 <ROOT::Internal::DefineBehavior(void*, void*)::theDefault>) at /home/pcanal/root_builds/v6-14-00-patches/opt/include/Rtypes.h:176 #9 ROOT::TGenericClassInfo::GetClass (this=0x7ffff7dab660 <ROOT::GenerateInitInstanceLocal(TGlobal const*)::instance>) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TGenericClassInfo.cxx:250 #10 0x00007ffff7b1a2d8 in TGlobal::Class () at /home/pcanal/root_builds/v6-14-00-patches/opt/core/base/G__Core.cxx:17156 #11 0x00007ffff7ac01de in TGlobal::IsA (this=0xee3bc0) at /home/pcanal/root_builds/v6-14-00-patches/opt/include/TGlobal.h:48 #12 TGlobal::CheckTObjectHashConsistency (this=0xee3bc0) at /home/pcanal/root_builds/v6-14-00-patches/opt/include/TGlobal.h:48 #13 0x00007ffff7be9dcd in TObject::CheckedHash (this=0xee3bc0) at /home/pcanal/root_builds/v6-14-00-patches/opt/include/TObject.h:314 #14 THashTable::GetCheckedHashValue (this=0xe65a20, obj=0xee3bc0) at /home/pcanal/root_builds/v6-14-00-patches/opt/include/THashTable.h:94 #15 THashTable::Add (this=0xe65a20, obj=0xee3bc0) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/cont/src/THashTable.cxx:96 #16 0x00007ffff7be6bf1 in THashList::AddLast (this=this@entry=0x5be690, obj=obj@entry=0xee3bc0) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/cont/src/THashList.cxx:100 #17 0x00007ffff7c4e0d1 in TListOfDataMembers::AddLast (this=0x5be690, obj=0xee3bc0) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TListOfDataMembers.cxx:103 #18 0x00007ffff7ab8785 in TList::Add (obj=0xee3bc0, this=0x5be690) at /home/pcanal/root_builds/v6-14-00-patches/opt/include/TList.h:87 #19 TROOT::GetListOfGlobals (this=0x7ffff7da7a60 <ROOT::Internal::GetROOT1()::alloc>, load=load@entry=false) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/base/src/TROOT.cxx:1767 #20 0x00007fffeeab1058 in TCling::HandleNewDecl (this=0x4a0550, DV=0xedf238, isDeserialized=isDeserialized@entry=true, modifiedTClasses=...) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/metacling/src/TCling.cxx:555 #21 0x00007fffeeabb785 in TCling::UpdateListsOnCommitted (this=0x4a0550, T=...) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/metacling/src/TCling.cxx:6115 #22 0x00007fffeebd0103 in cling::MultiplexInterpreterCallbacks::TransactionCommitted (this=0x57fe20, T=...) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/MultiplexInterpreterCallbacks.h:76 #23 0x00007fffeed05d71 in cling::IncrementalParser::commitTransaction (this=0x4a2980, PRT=..., ClearDiagClient=true) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/IncrementalParser.cpp:532 #24 0x00007fffeed06399 in cling::IncrementalParser::Compile (this=0x4a2980, input=..., Opts=...) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/IncrementalParser.cpp:663 #25 0x00007fffeebcbc4e in cling::Interpreter::DeclareInternal (this=0x4a0f30, input=..., CO=..., T=0x7fffffffd680) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/Interpreter.cpp:1195 #26 0x00007fffeebca8e8 in cling::Interpreter::declare (this=0x4a0f30, input=..., T=0x7fffffffd680) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/Interpreter.cpp:823 #27 0x00007fffeebcb560 in cling::Interpreter::DeclareCFunction (this=0x4a0f30, name=..., code=..., withAccessControl=true) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/Interpreter.cpp:1096 #28 0x00007fffeebcb862 in cling::Interpreter::compileFunction (this=0x4a0f30, name=..., code=..., ifUnique=false, withAccessControl=true) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/interpreter/cling/lib/Interpreter/Interpreter.cpp:1140 #29 0x00007fffeeafb83c in TClingCallFunc::compile_wrapper (withAccessControl=true, wrapper=..., wrapper_name=..., this=0xcf3c10) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/metacling/src/TClingCallFunc.cxx:270 root-project#30 TClingCallFunc::make_wrapper (this=this@entry=0xcf3c10) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/metacling/src/TClingCallFunc.cxx:1096 root-project#31 0x00007fffeeafbcb8 in TClingCallFunc::IFacePtr (this=this@entry=0xcf3c10) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/metacling/src/TClingCallFunc.cxx:2233 root-project#32 0x00007fffeeafbe83 in TClingCallFunc::ExecT<long> (address=0x0, this=0xcf3c10) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/metacling/src/TClingCallFunc.cxx:2045 root-project#33 TClingCallFunc::ExecInt (this=0xcf3c10, address=0x0) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/metacling/src/TClingCallFunc.cxx:2065 root-project#34 0x00007ffff7c56e8d in TMethodCall::Execute (this=0xd97710, object=<optimized out>, retLong=@0x7fffffffd958: 0) at /local2/pcanal/cint_working/rootcling/v6-14-00-patches/core/meta/src/TMethodCall.cxx:457 root-project#35 0x0000000000401009 in TMethodCall::Execute(long&) () root-project#36 0x00000000004010ea in long TPluginHandler::ExecPluginImpl<>() () root-project#37 0x000000000040106d in long TPluginHandler::ExecPlugin<>(int) () root-project#38 0x0000000000400e21 in mytest() () root-project#39 0x0000000000400e92 in main ()
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Before, MetaParser might have pointed to a StringRef whose storage was gone, see asan failure in roottest/cling/other/runfileClose.C below. This was caused by recursive uses of MetaParser; see stack trace below: the inner recursion returned, but as the same MetaParser object was used by both frames, the objects cursor now pointed to freed memory. Instead, create a MetaParser (and MetaLexer) object per input. That way, their lifetime corresponds to the lifetime of their input. ================================================================= ==529104==ERROR: AddressSanitizer: stack-use-after-return on address 0x7ffff3afd82a at pc 0x7fffea18df6d bp 0x7fffffff8170 sp 0x7fffffff8168 READ of size 1 at 0x7ffff3afd82a thread T0 [Detaching after fork from child process 529183] #0 0x7fffea18df6c in cling::MetaLexer::Lex(cling::Token&) src/interpreter/cling/lib/MetaProcessor/MetaLexer.cpp:58:11 #1 0x7fffea190d7c in cling::MetaParser::lookAhead(unsigned int) src/interpreter/cling/lib/MetaProcessor/MetaParser.cpp:89:15 #2 0x7fffea190bd5 in cling::MetaParser::consumeToken() src/interpreter/cling/lib/MetaProcessor/MetaParser.cpp:49:5 #3 0x7fffea191d4d in cling::MetaParser::isLCommand(cling::MetaSema::ActionResult&) src/interpreter/cling/lib/MetaProcessor/MetaParser.cpp:147:9 #4 0x7fffea1914dd in cling::MetaParser::isCommand(cling::MetaSema::ActionResult&, cling::Value*) src/interpreter/cling/lib/MetaProcessor/MetaParser.cpp:123:12 #5 0x7fffea191216 in cling::MetaParser::isMetaCommand(cling::MetaSema::ActionResult&, cling::Value*) src/interpreter/cling/lib/MetaProcessor/MetaParser.cpp:101:33 #6 0x7fffea14e5aa in cling::MetaProcessor::process(llvm::StringRef, cling::Interpreter::CompilationResult&, cling::Value*, bool) src/interpreter/cling/lib/MetaProcessor/MetaProcessor.cpp:317:24 #7 0x7fffe99b67b7 in HandleInterpreterException(cling::MetaProcessor*, char const*, cling::Interpreter::CompilationResult&, cling::Value*) src/core/metacling/src/TCling.cxx:2431:29 #8 0x7fffe99bde30 in TCling::Load(char const*, bool) src/core/metacling/src/TCling.cxx:3454:10 #9 0x7ffff7865f11 in TSystem::Load(char const*, char const*, bool) src/core/base/src/TSystem.cxx:1941:27 #10 0x7ffff7b8a0e3 in TUnixSystem::Load(char const*, char const*, bool) src/core/unix/src/TUnixSystem.cxx:2789:20 #11 0x7fffd78dd08b (<unknown module>) #12 0x7fffe9f8a5d9 in cling::IncrementalExecutor::executeWrapper(llvm::StringRef, cling::Value*) const src/interpreter/cling/lib/Interpreter/IncrementalExecutor.cpp:376:3 #13 0x7fffe9d73dc2 in cling::Interpreter::RunFunction(clang::FunctionDecl const*, cling::Value*) src/interpreter/cling/lib/Interpreter/Interpreter.cpp:1141:20 #14 0x7fffe9d6e317 in cling::Interpreter::EvaluateInternal(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cling::CompilationOptions, cling::Value*, cling::Transaction**, unsigned long) src/interpreter/cling/lib/Interpreter/Interpreter.cpp:1391:29 #15 0x7fffe9d6c1fe in cling::Interpreter::process(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cling::Value*, cling::Transaction**, bool) src/interpreter/cling/lib/Interpreter/Interpreter.cpp:819:9 #16 0x7fffea151826 in cling::MetaProcessor::readInputFromFile(llvm::StringRef, cling::Value*, unsigned long, bool) src/interpreter/cling/lib/MetaProcessor/MetaProcessor.cpp:507:22 #17 0x7fffe99b585b in TCling::ProcessLine(char const*, TInterpreter::EErrorCode*) src/core/metacling/src/TCling.cxx:2570:39 #18 0x7fffe99bbfee in TCling::ProcessLineSynch(char const*, TInterpreter::EErrorCode*) src/core/metacling/src/TCling.cxx:3496:17 #19 0x7ffff77203d3 in TApplication::ExecuteFile(char const*, int*, bool) src/core/base/src/TApplication.cxx:1608:30 #20 0x7ffff771ebdf in TApplication::ProcessFile(char const*, int*, bool) src/core/base/src/TApplication.cxx:1480:11 #21 0x7ffff771e385 in TApplication::ProcessLine(char const*, bool, int*) src/core/base/src/TApplication.cxx:1453:14 #22 0x7ffff7f8157a in TRint::ProcessLineNr(char const*, char const*, int*) src/core/rint/src/TRint.cxx:766:11 #23 0x7ffff7f802f0 in TRint::Run(bool) src/core/rint/src/TRint.cxx:424:22 #24 0x4ff96d in main src/main/src/rmain.cxx:30:12 #25 0x7ffff6e040b2 in __libc_start_main /build/glibc-YbNSs7/glibc-2.31/csu/../csu/libc-start.c:308:16 #26 0x41f35d in _start (asan/bin/root.exe+0x41f35d) Address 0x7ffff3afd82a is located in stack of thread T0 at offset 42 in frame #0 0x7fffe99b3d8f in TCling::ProcessLine(char const*, TInterpreter::EErrorCode*) src/core/metacling/src/TCling.cxx:2456 This frame has 21 object(s): [32, 56) 'sLine' (line 2462) <== Memory access at offset 42 is inside this variable [96, 104) 'R__guard2471' (line 2471) [128, 136) 'R__guard2488' (line 2488) [160, 176) 'interpreterFlagsRAII' (line 2491) [192, 240) 'result' (line 2511) [272, 276) 'compRes' (line 2512) [288, 312) 'mod_line' (line 2517) [352, 376) 'aclicMode' (line 2518) [416, 440) 'arguments' (line 2519) [480, 504) 'io' (line 2520) [544, 568) 'fname' (line 2521) [608, 632) 'ref.tmp' (line 2547) [672, 696) 'ref.tmp145' (line 2547) [736, 768) 'code' (line 2555) [800, 832) 'codeline' (line 2556) [864, 1384) 'in' (line 2559) [1520, 1552) 'ref.tmp176' (line 2562) [1584, 1600) 'agg.tmp' [1616, 1624) 'ref.tmp198' (line 2568) [1648, 1664) 'agg.tmp207' [1680, 1696) 'autoParseRaii' (line 2588) HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork (longjmp and C++ exceptions *are* supported) SUMMARY: AddressSanitizer: stack-use-after-return src/interpreter/cling/lib/MetaProcessor/MetaLexer.cpp:58:11 in cling::MetaLexer::Lex(cling::Token&) Shadow bytes around the buggy address: 0x10007e757ab0: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757ac0: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757ad0: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757ae0: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757af0: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 =>0x10007e757b00: f5 f5 f5 f5 f5[f5]f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757b10: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757b20: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757b30: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757b40: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 0x10007e757b50: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb Shadow gap: cc ==529104==ABORTING at src/interpreter/cling/lib/MetaProcessor/MetaLexer.cpp:49 at src/interpreter/cling/lib/MetaProcessor/MetaParser.cpp:41 compRes=@0x7ffff3afd910: cling::Interpreter::kSuccess, result=0x7ffff3afd8c0, disableValuePrinting=false) at src/interpreter/cling/lib/MetaProcessor/MetaProcessor.cpp:314 input_line=0x7ffff3afd829 "#define XYZ 21", compRes=@0x7ffff3afd910: cling::Interpreter::kSuccess, result=0x7ffff3afd8c0) at src/core/metacling/src/TCling.cxx:2431 error=0x7fffd78cb0f4 <x>) at src/core/metacling/src/TCling.cxx:2591 sync=false, err=0x7fffd78cb0f4 <x>) at src/core/base/src/TApplication.cxx:1472 line=0x7fffd78c9000 "#define XYZ 21", error=0x7fffd78cb0f4 <x>) at src/core/base/src/TROOT.cxx:2328 from asan/roottest/cling/other/fileClose_C.so filename=0x6070000f0fd0 "asan/roottest/cling/other/fileClose_C.so", flag=257) at /home/axel/build/llvm/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:6270 at src/interpreter/cling/lib/Utils/PlatformPosix.cpp:118 permanent=false, resolved=true) at src/interpreter/cling/lib/Interpreter/DynamicLibraryManager.cpp:184 at src/interpreter/cling/lib/Interpreter/Interpreter.cpp:1444 T=0x0) at src/interpreter/cling/lib/Interpreter/Interpreter.cpp:1560 at src/interpreter/cling/lib/MetaProcessor/MetaSema.cpp:57 actionResult=@0x7ffff39532b0: cling::MetaSema::AR_Success)
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This tutorial crashed with the following stacktrace when run interactively. Avoiding to register a canvas with the same name multiple times fixes the crash: ``` #8 0x00007f5b7876967d in TCanvas::Resize(char const*) (this=0x55e768e126c0) at ../graf2d/gpad/src/TCanvas.cxx:1740 #9 0x00007f5b3e90d668 in TRootCanvas::HandleContainerConfigure(Event_t*) (this=0x55e76852b460) at ../gui/gui/src/TRootCanvas.cxx:1789 #10 0x00007f5b3e8464fd in TGFrame::HandleEvent(Event_t*) (this=0x55e767938e70, event=0x7f5b79adff40) at ../gui/gui/src/TGFrame.cxx:476 #11 0x00007f5b3e7f4c9a in TGClient::HandleEvent(Event_t*) (this=0x55e768de2290, event=0x7f5b79adff40) at ../gui/gui/src/TGClient.cxx:846 #12 0x00007f5b3e7f531d in TGClient::ProcessOneEvent() (this=0x55e768de2290) at ../gui/gui/src/TGClient.cxx:656 #13 TGClient::ProcessOneEvent() (this=0x55e768de2290) at ../gui/gui/src/TGClient.cxx:648 #14 0x00007f5b3e7f536b in TGClient::HandleInput() (this=0x55e768de2290) at ../gui/gui/src/TGClient.cxx:703 #15 0x00007f5b8dcb0ff8 in TUnixSystem::DispatchOneEvent(bool) (this=0x55e75ccfd080, pendingOnly=<optimized out>) at ../core/unix/src/TUnixSystem.cxx:1067 #16 0x00007f5b8dbd0dca in TSystem::ProcessEvents() (this=0x55e75ccfd080) at ../core/base/src/TSystem.cxx:424 #17 0x00007f5b8130600d in () #18 0x00007f5b79ae0450 in () #19 0x00007f5b8de5215f in WrapperCall(Cppyy::TCppMethod_t, size_t, void*, void*, void*) (method=94452242807424, nargs=0, args_=0x7f5b79ae01d7, self=0x55e75ccfd080, result=0x7f5b79ae01d7) at ../bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:778 #20 0x00007f5b8de527cf in CallT<unsigned char> (args=<optimized out>, nargs=<optimized out>, self=<optimized out>, method=<optimized out>) at ../bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:816 #21 Cppyy::CallB(long, void*, unsigned long, void*) (method=<optimized out>, self=<optimized out>, nargs=<optimized out>, args=<optimized out>) at ../bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:833 #22 0x00007f5b8decdc0f in GILCallB (ctxt=0x7f5b79ae0430, self=<optimized out>, method=<optimized out>) at ../bindings/pyroot/cppyy/CPyCppyy/src/Executors.cxx:69 #23 CPyCppyy::(anonymous namespace)::BoolExecutor::Execute(Cppyy::TCppMethod_t, Cppyy::TCppObject_t, CPyCppyy::CallContext*) (this=<optimized out>, method=<optimized out>, self=<optimized out>, ctxt=0x7f5b79ae0430) at ../bindings/pyroot/cppyy/CPyCppyy/src/Executors.cxx:148 #24 0x00007f5b8deba4c9 in CPyCppyy::CPPMethod::ExecuteFast(void*, long, CPyCppyy::CallContext*) (self=<optimized out>, offset=<optimized out>, ctxt=<optimized out>, this=<optimized out>, this=<optimized out>) at ../bindings/pyroot/cppyy/CPyCppyy/src/CPPMethod.cxx:74 #25 0x00007f5b8debd3a8 in CPyCppyy::CPPMethod::ExecuteProtected(void*, long, CPyCppyy::CallContext*) (this=this entry=0x55e760617f50, self=0x55e75ccfd080, offset=0, ctxt=0x7f5b79ae0430) at ../bindings/pyroot/cppyy/CPyCppyy/src/CPPMethod.cxx:149 #26 0x00007f5b8debb6fa in CPyCppyy::CPPMethod::Execute(void*, long, CPyCppyy::CallContext*) (this=this entry=0x55e760617f50, self=self entry=0x55e75ccfd080, offset=<optimized out>, ctxt=ctxt entry=0x7f5b79ae0430) at ../bindings/pyroot/cppyy/CPyCppyy/src/CPPMethod.cxx:728 #27 0x00007f5b8debc46c in CPyCppyy::CPPMethod::Call(CPyCppyy::CPPInstance*&, _object*, _object*, CPyCppyy::CallContext*) (this=0x55e760617f50, self= 0x7f5b8080ef50: 0x7f5b808043c0, args=0x7f5b8e1ab040, kwds=<optimized out>, ctxt=0x7f5b79ae0430) at ../bindings/pyroot/cppyy/CPyCppyy/src/CPPMethod.cxx:783 #28 0x00007f5b8dec09fe in CPyCppyy::(anonymous namespace)::mp_call(CPyCppyy::CPPOverload*, PyObject*, PyObject*) (pymeth=0x7f5b8080ef40, args=0x7f5b8e1ab040, kwds=0x0) at ../bindings/pyroot/cppyy/CPyCppyy/src/CPPOverload.cxx:566 #29 0x00007f5b8e941333 in _PyObject_MakeTpCall () at /usr/lib/libpython3.9.so.1.0 root-project#30 0x00007f5b8e93d218 in _PyEval_EvalFrameDefault () at /usr/lib/libpython3.9.so.1.0 root-project#31 0x00007f5b8e936fd9 in () at /usr/lib/libpython3.9.so.1.0 root-project#32 0x00007f5b8e948b8e in _PyFunction_Vectorcall () at /usr/lib/libpython3.9.so.1.0 root-project#33 0x00007f5b8e93aec9 in _PyEval_EvalFrameDefault () at /usr/lib/libpython3.9.so.1.0 root-project#34 0x00007f5b8e94896b in _PyFunction_Vectorcall () at /usr/lib/libpython3.9.so.1.0 root-project#35 0x00007f5b8e93858e in _PyEval_EvalFrameDefault () at /usr/lib/libpython3.9.so.1.0 root-project#36 0x00007f5b8e94896b in _PyFunction_Vectorcall () at /usr/lib/libpython3.9.so.1.0 root-project#37 0x00007f5b8e93858e in _PyEval_EvalFrameDefault () at /usr/lib/libpython3.9.so.1.0 root-project#38 0x00007f5b8e94896b in _PyFunction_Vectorcall () at /usr/lib/libpython3.9.so.1.0 root-project#39 0x00007f5b8e95795b in () at /usr/lib/libpython3.9.so.1.0 root-project#40 0x00007f5b8ea3cac6 in () at /usr/lib/libpython3.9.so.1.0 root-project#41 0x00007f5b8ea17554 in () at /usr/lib/libpython3.9.so.1.0 root-project#42 0x00007f5b8e62c259 in start_thread () at /usr/lib/libpthread.so.0 root-project#43 0x00007f5b8e7425e3 in clone () at /usr/lib/libc.so.6 ```
lmoneta
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Oct 1, 2024
The test was dynamically allocating the array data members of the `Data` struct, but never deallocating them. This commit polishes the `Data` struct definition and ensures proper management of the data members. The previous way of writing data to the TTree was leading to a bad memory access in the ReadBasicPointer inlined function in TStreamerInfoReadBuffer.cxx while reading the `double*` array. In particular, the issue arises when accessing and then deallocating the array at the current index provided by the `TCompInfo` object. ``` Target 0: (repro.out) stopped. (lldb) Process 13498 stopped * thread #1, queue = 'com.apple.main-thread', stop reason = step in frame #0: 0x00000001044cf140 libRIO.so`int TStreamerInfo::ReadBuffer<char**>(this=<unavailable>, b=<unavailable>, arr=<unavailable>, compinfo=<unavailable>, first=<unavailable>, last=<unavailable>, narr=<unavailable>, eoffset=<unavailable>, arrayMode=0) at TStreamerInfoReadBuffer.cxx:923:65 [opt] 920 case TStreamerInfo::kOffsetP + TStreamerInfo::kLong: ReadBasicPointer(Long_t); continue; 921 case TStreamerInfo::kOffsetP + TStreamerInfo::kLong64: ReadBasicPointer(Long64_t); continue; 922 case TStreamerInfo::kOffsetP + TStreamerInfo::kFloat: ReadBasicPointer(Float_t); continue; -> 923 case TStreamerInfo::kOffsetP + TStreamerInfo::kDouble: ReadBasicPointer(Double_t); continue; 924 case TStreamerInfo::kOffsetP + TStreamerInfo::kUChar: ReadBasicPointer(UChar_t); continue; 925 case TStreamerInfo::kOffsetP + TStreamerInfo::kUShort: ReadBasicPointer(UShort_t); continue; 926 case TStreamerInfo::kOffsetP + TStreamerInfo::kUInt: ReadBasicPointer(UInt_t); continue; Target 0: (repro.out) stopped. (lldb) Process 13498 stopped * thread #1, queue = 'com.apple.main-thread', stop reason = step in frame #0: 0x00000001044cf184 libRIO.so`int TStreamerInfo::ReadBuffer<char**>(TBuffer&, char** const&, TStreamerInfo::TCompInfo* const*, int, int, int, int, int) [inlined] TBuffer::BufferSize(this=0x000060e00010ef00) const at TBuffer.h:98:41 [opt] 95 TObject *GetParent() const; 96 char *Buffer() const { return fBuffer; } 97 char *GetCurrent() const { return fBufCur; } -> 98 Int_t BufferSize() const { return fBufSize; } 99 void DetachBuffer() { fBuffer = nullptr; } 100 Int_t Length() const { return (Int_t)(fBufCur - fBuffer); } 101 void Expand(Int_t newsize, Bool_t copy = kTRUE); // expand buffer to newsize Target 0: (repro.out) stopped. (lldb) p fBufSize (Int_t) 32008 (lldb) s Process 13498 stopped * thread #1, queue = 'com.apple.main-thread', stop reason = step in frame #0: 0x00000001044cf194 libRIO.so`int TStreamerInfo::ReadBuffer<char**>(this=<unavailable>, b=<unavailable>, arr=<unavailable>, compinfo=<unavailable>, first=<unavailable>, last=<unavailable>, narr=<unavailable>, eoffset=<unavailable>, arrayMode=0) at TStreamerInfoReadBuffer.cxx:923:65 [opt] 920 case TStreamerInfo::kOffsetP + TStreamerInfo::kLong: ReadBasicPointer(Long_t); continue; 921 case TStreamerInfo::kOffsetP + TStreamerInfo::kLong64: ReadBasicPointer(Long64_t); continue; 922 case TStreamerInfo::kOffsetP + TStreamerInfo::kFloat: ReadBasicPointer(Float_t); continue; -> 923 case TStreamerInfo::kOffsetP + TStreamerInfo::kDouble: ReadBasicPointer(Double_t); continue; 924 case TStreamerInfo::kOffsetP + TStreamerInfo::kUChar: ReadBasicPointer(UChar_t); continue; 925 case TStreamerInfo::kOffsetP + TStreamerInfo::kUShort: ReadBasicPointer(UShort_t); continue; 926 case TStreamerInfo::kOffsetP + TStreamerInfo::kUInt: ReadBasicPointer(UInt_t); continue; Target 0: (repro.out) stopped. (lldb) s Process 13498 stopped * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0xbebebebebebebeae) frame #0: 0x0000000107bac674 libclang_rt.asan_osx_dynamic.dylib`__asan::Allocator::Deallocate(void*, unsigned long, unsigned long, __sanitizer::BufferedStackTrace*, __asan::AllocType) + 76 libclang_rt.asan_osx_dynamic.dylib`__asan::Allocator::Deallocate: -> 0x107bac674 <+76>: casalb w8, w9, [x22] 0x107bac678 <+80>: cmp w8, #0x2 0x107bac67c <+84>: b.ne 0x107bac6f4 ; <+204> 0x107bac680 <+88>: mov x8, #-0x100000000 ; =-4294967296 Target 0: (repro.out) stopped. (lldb) bt * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0xbebebebebebebeae) * frame #0: 0x0000000107bac674 libclang_rt.asan_osx_dynamic.dylib`__asan::Allocator::Deallocate(void*, unsigned long, unsigned long, __sanitizer::BufferedStackTrace*, __asan::AllocType) + 76 frame #1: 0x0000000107c0c444 libclang_rt.asan_osx_dynamic.dylib`wrap__ZdaPv + 232 frame #2: 0x00000001044d4a60 libRIO.so`int TStreamerInfo::ReadBuffer<char**>(this=<unavailable>, b=<unavailable>, arr=<unavailable>, compinfo=<unavailable>, first=<unavailable>, last=<unavailable>, narr=<unavailable>, eoffset=<unavailable>, arrayMode=0) at TStreamerInfoReadBuffer.cxx:923:65 [opt] frame #3: 0x0000000103ffc888 libRIO.so`TStreamerInfoActions::GenericReadAction(buf=0x000060e00010ef00, addr=0x0000602000056bd0, config=0x0000604000149910) at TStreamerInfoActions.cxx:195:45 frame #4: 0x0000000103caa5ec libRIO.so`TStreamerInfoActions::TConfiguredAction::operator()(this=0x00006030001693f0, buffer=0x000060e00010ef00, object=0x0000602000056bd0) const at TStreamerInfoActions.h:123:17 frame #5: 0x0000000103ca9ef8 libRIO.so`TBufferFile::ApplySequence(this=0x000060e00010ef00, sequence=0x000060600011ac20, obj=0x0000602000056bd0) at TBufferFile.cxx:3702:10 frame #6: 0x00000001064bc570 libTree.so`TBranchElement::ReadLeavesMemberBranchCount(this=0x0000619000566380, b=0x000060e00010ef00) at TBranchElement.cxx:4603:6 frame #7: 0x0000000106455ce4 libTree.so`TBranch::GetEntry(this=0x0000619000566380, entry=0, getall=0) at TBranch.cxx:1753:4 frame #8: 0x00000001064a1764 libTree.so`TBranchElement::GetEntry(this=0x0000619000566380, entry=0, getall=0) at TBranchElement.cxx:2783:27 frame #9: 0x000000010739915c libTreePlayer.so`ROOT::Detail::TBranchProxy::Read(this=0x00006110000c9580) at TBranchProxy.h:163:42 frame #10: 0x0000000107649ba8 libTreePlayer.so`(anonymous namespace)::TObjectArrayReader::At(this=0x0000603000169900, proxy=0x00006110000c9580, idx=1) at TTreeReaderArray.cxx:176:22 frame #11: 0x000000010000c2e4 repro.out`ROOT::Internal::TTreeReaderArrayBase::UntypedAt(this=0x000000016fdfe740, idx=1) const at TTreeReaderArray.h:41:62 frame #12: 0x000000010000c200 repro.out`TTreeReaderArray<double>::At(this=0x000000016fdfe740, idx=1) at TTreeReaderArray.h:205:54 frame #13: 0x00000001000065e0 repro.out`TTreeReaderArray<double>::operator[](this=0x000000016fdfe740, idx=1) at TTreeReaderArray.h:207:44 frame #14: 0x0000000100007b48 repro.out`simpleTest() at repro.cpp:123:26 frame #15: 0x0000000100007e10 repro.out`main at repro.cpp:128:5 frame #16: 0x000000018c718274 dyld`start + 2840 ```
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Little changes to modernize code.