If the user kills your program with Ctrl-C, you don't have any destructor guarantees. If your program is killed by the OS because the user logged off or powered

If the user kills your program with Ctrl-C, you don't have any destructor guarantees. If your program is killed by the OS because the user logged off or powered down their machine, you don't have any destructor guarantees. If your program fails an assertion, you don't have any destructor guarantees. If your program segfaults, you don't have any destructor guarantees. This really isn't that exotic of a scenario. My personal opinion is that using RAII to do anything that you wouldn't trust the OS do for you in the event of an early termination is setting yourself up for disaster.