https://bugs.kde.org/show_bug.cgi?id=362515

--- Comment #3 from Sven Brauch <m...@svenbrauch.de> ---
Might be the same issue, I hit that two days ago myself:

Thread 12 "KDevelop::Compl" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffd10c6700 (LWP 11166)]
0x00007fffc18177bc in 
Python::Helper::declarationForName(KDevelop::QualifiedIdentifier const&, 
KDevelop::RangeInRevision const&, KDevelop::DUChainPointer<KDevelop::DUContext 
const>) () from /home/sven/install/lib64/libkdevpythonduchain.so
(gdb) bt
#0  0x00007fffc18177bc in 
Python::Helper::declarationForName(KDevelop::QualifiedIdentifier const&, 
KDevelop::RangeInRevision const&, KDevelop::DUChainPointer<KDevelop::DUContext 
const>) () from /home/sven/install/lib64/libkdevpythonduchain.so
#1  0x00007fffc180cd98 in
Python::ExpressionVisitor::visitName(Python::NameAst*) 
() from /home/sven/install/lib64/libkdevpythonduchain.so
#2  0x00007fffa94167c2 in Python::AstVisitor::visitNode(Python::Ast*) () from 
/home/sven/install/lib64/libkdevpythonparser.so
#3  0x00007fffa9410748 in 
Python::AstDefaultVisitor::visitExpression(Python::ExpressionAst*) () from 
/home/sven/install/lib64/libkdevpythonparser.so
#4  0x00007fffa9416a59 in Python::AstVisitor::visitNode(Python::Ast*) () from 
/home/sven/install/lib64/libkdevpythonparser.so
#5  0x00007fffa94106bb in
Python::AstDefaultVisitor::visitCode(Python::CodeAst*) 
() from /home/sven/install/lib64/libkdevpythonparser.so
#6  0x00007fffd180ca52 in Python::visitorForString(QString, 
KDevelop::DUContext*, KDevelop::CursorInRevision) () from 
/home/sven/install/lib64/libkdevpythoncompletion.so
#7  0x00007fffd180f12a in 
Python::PythonCodeCompletionContext::memberAccessItems() () from 
/home/sven/install/lib64/libkdevpythoncompletion.so
#8  0x00007fffd1811eda in 
Python::PythonCodeCompletionContext::completionItems(bool&, bool) () from 
/home/sven/install/lib64/libkdevpythoncompletion.so
#9  0x00007fffedc4145b in 
KDevelop::CodeCompletionWorker::computeCompletions(KDevelop::DUChainPointer<KDevelop::DUContext>,
 
KTextEditor::Cursor const&, QString, KTextEditor::Range const&, QString const&) 
() from /home/sven/install/lib64/libKDevPlatformLanguage.so.10
#10 0x00007fffedc41039 in 
KDevelop::CodeCompletionWorker::computeCompletions(KDevelop::DUChainPointer<KDevelop::DUContext>,
 
KTextEditor::Cursor const&, KTextEditor::View*) () from 
/home/sven/install/lib64/libKDevPlatformLanguage.so.10
#11 0x00007fffedc48920 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0, 1, 
2>, QtPrivate::List<KDevelop::DUChainPointer<KDevelop::DUContext>, 
KTextEditor::Cursor const&, KTextEditor::View*>, void, void 
(KDevelop::CodeCompletionWorker::*)(KDevelop::DUChainPointer<KDevelop::DUContext>,
 
KTextEditor::Cursor const&, KTextEditor::View*)>::call(void 
(KDevelop::CodeCompletionWorker::*)(KDevelop::DUChainPointer<KDevelop::DUContext>,
 
KTextEditor::Cursor const&, KTextEditor::View*), 
KDevelop::CodeCompletionWorker*, void**) ()
    from /home/sven/install/lib64/libKDevPlatformLanguage.so.10
#12 0x00007fffedc483c9 in void QtPrivate::FunctionPointer<void 
(KDevelop::CodeCompletionWorker::*)(KDevelop::DUChainPointer<KDevelop::DUContext>,
 
KTextEditor::Cursor const&, 
KTextEditor::View*)>::call<QtPrivate::List<KDevelop::DUChainPointer<KDevelop::DUContext>,
 
KTextEditor::Cursor const&, KTextEditor::View*>, void>(void 
(KDevelop::CodeCompletionWorker::*)(KDevelop::DUChainPointer<KDevelop::DUContext>,
 
KTextEditor::Cursor const&, KTextEditor::View*), 
KDevelop::CodeCompletionWorker*, void**) ()
    from /home/sven/install/lib64/libKDevPlatformLanguage.so.10
#13 0x00007fffedc47db9 in QtPrivate::QSlotObject<void 
(KDevelop::CodeCompletionWorker::*)(KDevelop::DUChainPointer<KDevelop::DUContext>,
 
KTextEditor::Cursor const&, KTextEditor::View*), 
QtPrivate::List<KDevelop::DUChainPointer<KDevelop::DUContext>, 
KTextEditor::Cursor const&, KTextEditor::View*>, void>::impl(int, 
QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () from 
/home/sven/install/lib64/libKDevPlatformLanguage.so.10
#14 0x00007ffff0af2659 in QObject::event(QEvent*) () from
/usr/lib/libQt5Core.so.5
#15 0x00007ffff17e968c in QApplicationPrivate::notify_helper(QObject*, QEvent*) 
() from /usr/lib/libQt5Widgets.so.5
#16 0x00007ffff17ee8f6 in QApplication::notify(QObject*, QEvent*) () from 
/usr/lib/libQt5Widgets.so.5
#17 0x00007ffff0ac5518 in QCoreApplication::notifyInternal2(QObject*, QEvent*) 
() from /usr/lib/libQt5Core.so.5
#18 0x00007ffff0ac73da in QCoreApplicationPrivate::sendPostedEvents(QObject*, 
int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#19 0x00007ffff0b1a883 in ?? () from /usr/lib/libQt5Core.so.5
#20 0x00007fffe6240f07 in g_main_context_dispatch () from
/usr/lib/libglib-2.0.so.0
#21 0x00007fffe6241160 in ?? () from /usr/lib/libglib-2.0.so.0
#22 0x00007fffe624120c in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#23 0x00007ffff0b1ac8f in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
from /usr/lib/libQt5Core.so.5
#24 0x00007ffff0ac36fa in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from 
/usr/lib/libQt5Core.so.5
---Type <return> to continue, or q <return> to quit---
#25 0x00007ffff08ecfe4 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#26 0x00007fffedc46853 in KDevelop::CompletionWorkerThread::run() () from 
/home/sven/install/lib64/libKDevPlatformLanguage.so.10
#27 0x00007ffff08f1de8 in ?? () from /usr/lib/libQt5Core.so.5
#28 0x00007fffe8b82424 in start_thread () from /usr/lib/libpthread.so.0
#29 0x00007fffefcf0cbd in clone () from /usr/lib/libc.so.6

Waiting for it to happen again now with a debug build.

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