c - Inputs for improving code debuggability apart from logs and error codes

Question

Apart from error codes, error strings and logs, are there any other features which can be incorporated in the code to increase getting debug / trace information during code runtime which can help debug issues (or let us know what is going on) at runtime?

Answer 1

• Build without optimization, to preserve as much of the "intent" of the code as possible
• Build in debug mode, to add symbol information
• Don't strip the executable (on Linux/Unix systems), to keep as much symbol information as possible for debuggers to use