We have found a crash in pinentry-qt with QtCurve using pinentry-1.1.0 in openSUSE Tumbleweed. The steps to reproduce the crash are mentioned in . The root cause is a dangling pointer in qt/main.cpp and the patch that fixes the issue can be found in . I'll attach the patch here.
Not sure if additional checks should be added at this point for argc since it must be greater than zero.