[TUHS] history of virtual address space

[Rich Salz via TUHS]

On Mon, Jan 19, 2026 at 7:05 PM Warner Losh via TUHS <tuhs at tuhs.org> wrote:

> 4.2BSD on the Vax dereferencing 0 would seg fault. I'm not sure when this
> started. I am sure that System V or 32V on the Vax dereferencing 0 gave
> 0.


Are you sure?  My memory is the opposite.  For example,
https://www.tuhs.org/Usenet/comp.bugs.4bsd/1989-July/003016.html