24 Aug
2018
24 Aug
'18
9:04 a.m.
Interesting. Void is missing, not just void*? At one point void worked but the void *
idiom was buggy/missing
The problem I have is the compiler was changing in small ways with each version and the
differences run together
Sent from my PDP-7 Running UNIX V0 expect things to be almost but not quite.
On Aug 23, 2018, at 9:58 PM, Dan Cross
<crossd(a)gmail.com> wrote:
On Thu, Aug 23, 2018 at 6:17 PM
<ron(a)ronnatalie.com> wrote:
[snip]
Void* came out with the V7 compiler, if I recall properly. The BSD kernel
looks as if it requires such a later compiler (it uses bit fields which the
earlier compilers didn't support).
But it doesn't matter. You are right char* (or caddr_t) would work just
fine for this albeit with some explicit casting.
This appears to be incorrect, unfortunately. I just tested on the PDP-11/70 running 7th
Edition at the Living Computer Museum (I've got an account there) and it appears that
neither `cc` nor `pcc` understand `void`.
Perhaps Steve Johnson can chime in on this? I suspect he'd know the history here
well.
- Dan C.