The story from the horse's mouth was that the PWB shell already used the
sigsegv trick
because they were concerned about (groan) speed,
so before they'd use Bourne's shell they insisted that it use the same hack.
Of course, the PWB people didn't care:
after all it was "portable" in the Humpty-Dumpty sense: it worked on
Vaxes & PDP/11s.
I wonder how many different people had to rewrite that code for the M68K?:-)
(luckily someone had already done it before I got there:-)
DaveL
Brantley Coile wrote:
That was really John Mashy's fault, as I understand it. He suggested
it to SRB. I had to deal with it when I ported V7 to the 68K. Too
bad every processor wasn't as clean in this reguard as the PDP-11.
For those who might not have heard of this, SRB caught segfault
signals, allocated more memory and just returned. The instruction
that caused the segfault would restart. It was an automatic memory
allocator. Problem was that not all processors could pull off this
sort of stunt.
Geoff cleaned this up years ago.
not even his allocator?
- erik
On Fri Apr 28 08:02:29 CDT 2006, [EMAIL PROTECTED] wrote:
Not that I'm defending writing C as
though it were Algol 68...
I kind of liked it after the initial shock.
Even inspired the Obfuscated C Contest.
I don't think SRB's code was obfuscated, though.
