[A1mDev]

It is not related to your extension, because i built an empty extension and got a crash too. Apparently the compiler is to blame, it creates debug symbols that the accelerator extension cannot read. I don't even know what to do in this case? Downgrade compiler? Specify flag '-gdwarf-4'? ... Of course if you use the new compiler, extension accelerator needs to be updated anyway.

Note1: The compiler option '-gdwarf-4' solves this problem of course, but I don't think it's a good idea.
Note2: gdb version 9.2 also fails to read some debug symbols (Dwarf Error: DW_FORM_strx1 found in non-DWO CU).