> Robust and portable, until someone tries compiling it with LLVM 13 that you haven't tested on… Yes, new compilers are able to get new insight into what is b

> Robust and portable, until someone tries compiling it with LLVM 13 that you haven't tested on… Yes, new compilers are able to get new insight into what is broken with your code. You can either: a) ignore that and let your users continue with the brokenness, since that is convenient at build-time (but the consequent failures in the field of whatever that code is integrated in may be extremely inconvenient for all downstream users) b) learn about it, and fix your code upstream so all users can benefit from the fixes