How bad is “if (!this)” in a C++ member function?

Question

If I come across old code that does if (!this) return; in an app, how severe a risk is this? Is it a dangerous ticking time bomb that requires an immediate app-wide

Answer 1

It's my personal opinion that you should fail as early as possible to alert you to problems. In that case, I'd unceremoniously remove each and every occurrence of if(!this) I could find.