Segfault happened at: 0x7f1e2300f020 <_ZN3nux9InputArea17StartDragAsSourceEv+80>: callq *0x160(%rax) PC (0x7f1e2300f020) ok source "*0x160(%rax)" ok destination "(%rsp)" (0x7fffb67608a0) ok SP (0x7fffb67608a0) ok Reason could not be automatically determined.