9fans - fans of the OS Plan 9 from Bell Labs
 help / color / mirror / Atom feed
From: gdiaz@9grid.es
To: 9fans@9fans.net
Subject: Re: [9fans] naive acid debugging
Date: Wed, 15 Jul 2009 19:52:45 +0200	[thread overview]
Message-ID: <8af7d4952446de958c9dd7b977e560ab@9grid.es> (raw)
In-Reply-To: <dd6fe68a0907151130g48fcfadaq4c1a83ce8ee5aed6@mail.gmail.com>

Hello

Thanks Russ, seems that even though i tried to use your iwp9 2007 talk as a reference, i missed the point, i should read more carefully.

gabi

>>>               print("f->mb=", f->mb\X,"       =?      mb=",mb\X,"\n");
>>>               f=f->next;
>
> Always use . (never ->) in acid.
>
> If f is a pointer, then the acid expression f.mb
> is like the C expression (*f).mb aka f->mb.
> The acid expression f->mb is like the C expression (**f).mb.
> By using -> here you are indirecting one level too far.
>
> -> is one of those acid features that seems
> to exist only to cause confusion.
>
> Russ




  reply	other threads:[~2009-07-15 17:52 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-15 15:26 gdiaz
2009-07-15 16:41 ` erik quanstrom
2009-07-15 18:30   ` Russ Cox
2009-07-15 17:52     ` gdiaz [this message]
2009-07-15 15:37 gdiaz

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=8af7d4952446de958c9dd7b977e560ab@9grid.es \
    --to=gdiaz@9grid.es \
    --cc=9fans@9fans.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).