Hello,
I believe iv’e identified an issue with libcxxabi.
The symptom is that, when calling std::treminate() on some simple program, the program segfaults.
After a bit of debugging libcxxabi, Iv’e noticed that __cxa_terminate_handler is NULL at program initialization. However, calling std::set_terminate(nullptr); sets the actual default terminate handler (in my case is just std::abort).
I tend to believe this is related to an static initialization order issue, in which __cxa_terminate_handler doesn’t not get this correct value of std::abort (set by default_terminate_handler).
https://github.com/llvm/llvm-project/blob/master/libcxxabi/src/cxa_default_handlers.cpp#L96
One solution for iv’e found is wrapping the default_terminate_handler with a function and set this function as __cxa_terminate_handler first.
I would be happy to hear your insights about this.