Path: utzoo!mnetor!tmsoft!torsqnt!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!ANDREW.CMU.EDU!zs01+
From: zs01+@ANDREW.CMU.EDU (Zalman Stern)
Newsgroups: comp.soft-sys.andrew
Subject: Re: "doload_preset" doesn't zero out BSS it allocates?
Message-ID: <cZPR18600Ukn8Omv0B@andrew.cmu.edu>
Date: 24 Nov 89 23:35:36 GMT
References: <2662@auspex.auspex.com>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 20

auspex!guy@uunet.uu.net  (Guy Harris) writes:
[ Bug report indicating that the class dynamic loader doesn't zero
common storage blocks. ]
> 
> Is this a performance issue?  It already calls "malloc" for each common
> anyway; does adding a call to "bzero" make things noticeably worse?

Thanks for finding this. It is certainly not a performance issue. Rather it
is a bug inherited from the orignal coding of the dynamic loader which I
have looked for a number of times but never found. Either the bug was
sufficiently subtle, or I wasn't looking hard enough... I think think this
explains a lot of problems we have had.

I'll see if I can get the fix on to the tape up at MIT. If not we will try
to do it as a patch I guess.

Sincerely,
Zalman Stern
Internet: zs01+@andrew.cmu.edu     Usenet: I'm soooo confused...
Information Technology Center, Carnegie Mellon, Pittsburgh, PA 15213-3890