Thanks for responding.
During the process of creating a minimum swift file for reproducing this issue, I found it was a crash caused by an inappropriate usage of unowned let and referencing a released object inside the third party framework. The weird part is that crash only happened in the release build. Anyway, this is not a issue of libxml and I will close this question.
DarkMaster
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> How reproducible is this for you? If you create a new test project from one of Xcode’s built-in templates, does it happen there as well? Or just with your main project?Thanks for the quick response.It only happens in the main project. Both new created project and others project work well.
Still seeing this issue in Xcode 11.4 and 11.4.1, I had filed a bug and the ID is FB7662246.