[setpatchaddress]

The problem with C isn’t you shooting yourself in the foot. The problem is that off-by-one errors and buffer overruns that are trivially easy to produce in C turn into security bugs that affect your users.

If you don’t have any users, fine, but no one writing a nontrivial program for use by other people should be doing it in straight C at this point if it’s at all possible to avoid.