Segfault on copy/paste of parameters in SkillMemoryGUI

Segmentation fault - Backtrace: 
/home/albrecpe/api/armarx/ArmarXCore/build/lib/libArmarXCore.so.0(_ZN6armarx11Application12HandlerFaultEi+0x531)[0x7f0c267f9ec1]
/lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f0c25242520]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libSkillManagerMonitorGuiPlugin.so.0.10.0(_ZN6armarx30AronTreeWidgetConverterVisitor16visitAronVariantERKSt10shared_ptrINS_4aron4type6StringEE+0x19c)[0x7f0c045d628c]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libaron.so.0(_ZN6armarx4aron4type19ConstVariantVisitor11visitStringERKSt10shared_ptrINS1_7VariantEE+0x98)[0x7f0c043dcbb8]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libSkillManagerMonitorGuiPlugin.so.0.10.0(_ZN6armarx30AronTreeWidgetConverterVisitor16visitAronVariantERKSt10shared_ptrINS_4aron4type6ObjectEE+0x311)[0x7f0c045d6871]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libaron.so.0(_ZN6armarx4aron4type19ConstVariantVisitor11visitObjectERKSt10shared_ptrINS1_7VariantEE+0x98)[0x7f0c043d7008]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libSkillManagerMonitorGuiPlugin.so.0.10.0(_ZN6armarx24AronTreeWidgetController23onTreeWidgetItemChangedEP15QTreeWidgetItemi+0x17c)[0x7f0c045fd68c]
/lib/x86_64-linux-gnu/libQt5Core.so.5(+0x2f1793)[0x7f0c25cf1793]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(_ZN11QTreeWidget11itemChangedEP15QTreeWidgetItemi+0x54)[0x7f0c23a663b4]
/lib/x86_64-linux-gnu/libQt5Core.so.5(+0x2f17c8)[0x7f0c25cf17c8]
/lib/x86_64-linux-gnu/libQt5Core.so.5(_ZN18QAbstractItemModel11dataChangedERK11QModelIndexS2_RK7QVectorIiE+0x49)[0x7f0c25c52a39]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(+0x46753a)[0x7f0c23a6753a]
/lib/x86_64-linux-gnu/libQt5Widgets.so.5(+0x46a493)[0x7f0c23a6a493]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libSkillManagerMonitorGuiPlugin.so.0.10.0(_ZN6armarx27AronTreeWidgetSetterVisitor16visitAronVariantERKSt10shared_ptrINS_4aron4data5FloatEE+0x219)[0x7f0c045dee99]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libaron.so.0(_ZN6armarx4aron4data19ConstVariantVisitor10visitFloatERKSt10shared_ptrINS1_7VariantEE+0x78)[0x7f0c043c34e8]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libSkillManagerMonitorGuiPlugin.so.0.10.0(_ZN6armarx27AronTreeWidgetSetterVisitor16visitAronVariantERKSt10shared_ptrINS_4aron4data4DictEE+0x156)[0x7f0c045df516]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libaron.so.0(_ZN6armarx4aron4data19ConstVariantVisitor9visitDictERKSt10shared_ptrINS1_7VariantEE+0x70)[0x7f0c043c1340]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libSkillManagerMonitorGuiPlugin.so.0.10.0(_ZN6armarx24AronTreeWidgetController11setFromAronERKSt10shared_ptrINS_4aron4data4DictEE+0x1e5)[0x7f0c045fcc15]
/home/albrecpe/api/armarx/RobotAPI/build/lib/libSkillManagerMonitorGuiPlugin.so.0.10.0(_ZN6armarx35SkillManagerMonitorWidgetController18pasteCurrentConfigEv+0x3ec)[0x7f0c0461b7fc]
/lib/x86_64-linux-gnu/libQt5Core.so.5(+0x2f1793)[0x7f0c25cf1793]

When copying the parameters of a skill and pasting them in another, a segfault happens. The invalid access appears while the AronTreeWidgetItem is updated with the new data.

added bug label

/cc @peller

changed the description

The issue exists in both the current version of the GUI, and in my refactor (in feature/skillMemoryGUI).

hm ok, have to investigate today after the grp meeting. it worked...

Thanks for finding this!