cpptools process crashes on `interface_from_context_helper`

Hi, thanks for the tip. 

Here is the crash: https://pastebin.com/wkL3nGki It seems to be an exception on thread 4.

I am on Ubuntu 20, local machine.

_Originally posted by @bruno-kakele in https://github.com/microsoft/vscode-cpptools/issues/8080#issuecomment-947219394_