#0  0x00007fffa62af3c9 in ntdll!RtlIsZeroMemory () from C:\Windows\System32\ntdll.dll
#1  0x00007fffa62af393 in ntdll!RtlIsZeroMemory () from C:\Windows\System32\ntdll.dll
#2  0x00007fffa62b8112 in ntdll!RtlpNtSetValueKey () from C:\Windows\System32\ntdll.dll
#3  0x00007fffa62b83fa in ntdll!RtlpNtSetValueKey () from C:\Windows\System32\ntdll.dll
#4  0x00007fffa62be081 in ntdll!RtlpNtSetValueKey () from C:\Windows\System32\ntdll.dll
#5  0x00007fffa6257952 in ntdll!memset () from C:\Windows\System32\ntdll.dll
#6  0x00007fffa61d47b1 in ntdll!RtlFreeHeap () from C:\Windows\System32\ntdll.dll
#7  0x00007fffa397f05b in ucrtbase!_free_base () from C:\Windows\System32\ucrtbase.dll
#8  0x00007fff138531bd in std::__1::__tree<boost::iterator_range<std::__1::__wrap_iter<char const*> >, std::__1::less<boost::iterator_range<std::__1::__wrap_iter<char const*> > >, std::__1::allocator<boost::iterator_range<std::__1::__wrap_iter<char const*> > > >::~__tree (this=0x5de15fcb88) at D:/Dev/Tools/msys64/clang64/include/c++/v1/__tree:1532
#9  std::__1::set<boost::iterator_range<std::__1::__wrap_iter<char const*> >, std::__1::less<boost::iterator_range<std::__1::__wrap_iter<char const*> > >, std::__1::allocator<boost::iterator_range<std::__1::__wrap_iter<char const*> > > >::~set[abi:ne190107]() (this=0x5de15fcb88) at D:/Dev/Tools/msys64/clang64/include/c++/v1/set:699
#10 Wt::WWebWidget::hasStyleClass (this=<optimized out>, styleClass=...) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WWebWidget.C:832
#11 0x00007fff13852bed in Wt::WWebWidget::removeStyleClass (this=0x1f047e30d20, styleClass=..., force=true) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WWebWidget.C:789
#12 0x00007fff1372171f in Wt::WInteractWidget::propagateSetEnabled (this=0x1f047e30d20, enabled=true) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WInteractWidget.C:671
#13 0x00007fff1365a8dd in Wt::WAnchor::propagateSetEnabled (this=0x0, enabled=true) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WAnchor.C:278
#14 0x00007fff136a0e6b in std::__1::__function::__value_func<void (Wt::WWidget*)>::operator()[abi:ne190107](Wt::WWidget*&&) const (this=0x5de15fce00, __args=@0x5de15fcdb0: 0x1f047e30d20)
    at D:/Dev/Tools/msys64/clang64/include/c++/v1/__functional/function.h:430
#15 std::__1::function<void (Wt::WWidget*)>::operator()(Wt::WWidget*) const (this=0x5de15fce00, __arg=0x1f047e30d20) at D:/Dev/Tools/msys64/clang64/include/c++/v1/__functional/function.h:989
#16 Wt::WContainerWidget::iterateChildren(std::__1::function<void (Wt::WWidget*)> const&) const (this=0x1f047e30b10, method=...) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WContainerWidget.C:217
#17 0x00007fff13854f6c in Wt::WWebWidget::propagateSetEnabled (this=0x0, enabled=<optimized out>) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WWebWidget.C:1180
#18 0x00007fff13721733 in Wt::WInteractWidget::propagateSetEnabled (this=0x1f047e30b10, enabled=true) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WInteractWidget.C:673
#19 0x00007fff138550ae in Wt::WWebWidget::widgetAdded (this=0x1f047e30450, child=0x1f047e30b10) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WWebWidget.C:1214
#20 0x00007fff136a0aaf in Wt::WContainerWidget::insertWidget (this=0x1f047e30450, index=1, widget=...) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WContainerWidget.C:154
#21 0x00007fff13758251 in Wt::WContainerWidget::insertWidget<Wt::WMenuItem> (this=0x0, index=1, widget=...) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WContainerWidget.h:358
#22 Wt::WMenu::insertItem (this=0x1f047e3ddb0, index=1, item=...) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WMenu.C:223
#23 0x00007fff13757e7f in Wt::WMenu::addItem (this=0x1f047e3ddb0, item=...) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WMenu.C:184
#24 0x00007fff13757af8 in Wt::WMenu::addItem (this=0x1f047e3ddb0, iconPath=..., name=..., contents=..., policy=Wt::ContentLoading::Lazy) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WMenu.C:153
#25 0x00007fff13757a1f in Wt::WMenu::addItem (this=0x0, name=..., contents=..., policy=<optimized out>) at D:/Dev/BuildLibs/wt/wt-4.11.2/src/Wt/WMenu.C:146
#26 0x00007ff6f384194b in createHelloApplication (env=...) at D:/Dev/Misc/WtMinimalSample/Source/main.cpp:65