From: Stan Shebs <shebs@cygnus.com>
To: bfd@cygnus.com
Subject: Re: A patch for elf.c
Date: Wed, 09 Dec 1998 16:27:00 -0000 [thread overview]
Message-ID: <xdd85s7sq9.fsf@andros.cygnus.com> (raw)
In-Reply-To: <199812091735.MAA29788@subrogation.cygnus.com>
law@hurl.cygnus.com (Jeffrey A Law) writes:
> Once one understands precisely why clearing one or more memory locations is
> fixing a bug, once can decide if clearing one or more fields or a whole
> structure/array is the best solution.
>
> I believe gdb operates under a similar guidelines.
Yes. There is actually a real reason to not just automatically zero
everything - in some cases, the blocks are very large, and it's known
that they will be overwritten soon, such as when BFD reads in a whole
section. So zeroing all allocated blocks chews execution time
uselessly.
This is just a GNU standard. In my other program (Xconq), everything
is zeroed upon allocation, and the rest of the code is designed to
exploit that.
Stan
prev parent reply other threads:[~1998-12-09 16:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.3.96.981208082500.26204A-100000@beezer.med.miami.edu>
1998-12-08 9:57 ` H.J. Lu
1998-12-08 10:28 ` Christopher C Chimelis
1998-12-08 11:26 ` Ian Lance Taylor
1998-12-08 11:34 ` Christopher C Chimelis
1998-12-09 7:42 ` H.J. Lu
1998-12-09 8:04 ` Roland McGrath
1998-12-09 9:35 ` Ian Lance Taylor
1998-12-09 10:03 ` Jeffrey A Law
1998-12-09 16:27 ` Stan Shebs [this message]
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