https://bugs.kde.org/show_bug.cgi?id=465872

--- Comment #20 from Jiri Slaby <jirisl...@gmail.com> ---
Created attachment 156860
  --> https://bugs.kde.org/attachment.cgi?id=156860&action=edit
valgrind of plasmashell

> Invalid read of size 4
>    at 0x5686376: UnknownInlinedFun (qqmljavascriptexpression_p.h:230)
>    by 0x5686376: QQmlPropertyCapture::captureProperty(QObject*, int, int, 
> bool) (qqmljavascriptexpression.cpp:281)
>    by 0x831975B: QV4::ModelObject::virtualGet(QV4::Managed const*, 
> QV4::PropertyKey, QV4::Value const*, bool*) (qqmllistmodel.cpp:1639)
>    by 0x551C680: UnknownInlinedFun (qv4object_p.h:308)
>    by 0x551C680: QV4::Lookup::getterFallback(QV4::Lookup*, 
> QV4::ExecutionEngine*, QV4::Value const&) (qv4lookup.cpp:231)
>    by 0x8314B38: QV4::ModelObject::virtualResolveLookupGetter(QV4::Object 
> const*, QV4::ExecutionEngine*, QV4::Lookup*) (qqmllistmodel.cpp:1650)
>    by 0x551D78D: QV4::Lookup::getterGeneric(QV4::Lookup*, 
> QV4::ExecutionEngine*, QV4::Value const&) (qv4lookup.cpp:144)
>    by 0x558F20B: QV4::Moth::VME::interpret(QV4::CppStackFrame*, 
> QV4::ExecutionEngine*, char const*) (qv4vme_moth.cpp:641)
>    by 0x5592E3B: UnknownInlinedFun (qv4vme_moth.cpp:466)
>    by 0x5592E3B: QV4::Moth::VME::exec(QV4::CppStackFrame*, 
> QV4::ExecutionEngine*) (qv4vme_moth.cpp:430)
>    by 0x553DCFD: QV4::ArrowFunction::virtualCall(QV4::FunctionObject const*, 
> QV4::Value const*, QV4::Value const*, int) (qv4functionobject.cpp:528)
>    by 0x55A43E9: UnknownInlinedFun (qv4functionobject_p.h:202)
>    by 0x55A43E9: 
> QV4::Runtime::CallQmlContextPropertyLookup::call(QV4::ExecutionEngine*, 
> unsigned int, QV4::Value*, int) (qv4runtime.cpp:1366)
>    by 0x5590E13: QV4::Moth::VME::interpret(QV4::CppStackFrame*, 
> QV4::ExecutionEngine*, char const*) (qv4vme_moth.cpp:787)
>    by 0x5592E3B: UnknownInlinedFun (qv4vme_moth.cpp:466)
>    by 0x5592E3B: QV4::Moth::VME::exec(QV4::CppStackFrame*, 
> QV4::ExecutionEngine*) (qv4vme_moth.cpp:430)
>    by 0x553DCFD: QV4::ArrowFunction::virtualCall(QV4::FunctionObject const*, 
> QV4::Value const*, QV4::Value const*, int) (qv4functionobject.cpp:528)
>  Address 0x8dc35e63 is not stack'd, malloc'd or (recently) free'd

So it's apparently not even use after free.

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