> > Sprinkling printf is an efficient way to debug. > I mostly work on threaded code, and print statements are my go to for tracking down weird timing issues.

> > Sprinkling printf is an efficient way to debug. > I mostly work on threaded code, and print statements are my go to for tracking down weird timing issues. I have found printf to subtly alter timing in threaded programs. Either masking issues or introducing them. Anecdotally, I remember some programs being reported as working only with a printf present and bombing when removed.