> Can you safely replay arbitrary C, C++, etc.? No, because side-effecting code could run at any time and occur in any context. So that is one problem that has

> Can you safely replay arbitrary C, C++, etc.? No, because side-effecting code could run at any time and occur in any context. So that is one problem that has to be solved first. With few restrictions, it's actually possible to replay arbitrary assembly. Namely, don't care about timing and no system calls that can't be replayed and you basically have what "checkpoint" does in gdb.