|
|
|
|
|
|
by eru
612 days ago
|
|
|
> But, in a lot of cases, there's really nothing particularly sensible to do: the pointer not being null is an invariant that was supposed to be upheld and it wasn't, and now at the point of dereference, at runtime, there's nothing to do except crash. Which is what would've happened anyways, so what's the point? Crashing is the lucky case! Specifically in the kernel, there can be valid memory at address 0, and there are exploits that capitalise on the friction between memory address 0 sometimes being and C's null pointer being full of undefined behaviour. |
|
|