Mirror of the gdb mailing list
 help / color / mirror / Atom feed
From: mec.gnu@mindspring.com (Michael Elizabeth Chastain)
To: drow@false.org, eliz@gnu.org
Cc: gdb@sources.redhat.com, mec.gnu@mindspring.com, rolandz@poczta.fm
Subject: Re: How to setup a breakpoint on constructor
Date: Fri, 16 Jul 2004 19:59:00 -0000	[thread overview]
Message-ID: <20040716193117.EFE514B104@berman.michael-chastain.com> (raw)

To take the points in reverse order,

> (B) It exposes the difference between complete and base constructors,
> which is an implementation detail of the C++ ABI that most users don't
> understand.

That is reality.  The reality is that g++ emits two functions in the
object code.  In my opinion, if we try to gloss over that, then we'll
just create more confusion for commands such as 'disassemble' and
'tbreak'.

> (A) It was an ugly interface change to work around an internal
> limitation, and they needed to retrain users to it.

I agree with this part, to an extent.  However, the gdb group
has no control over the fact that there are two object code
functions.

I like the way it worked in gcc 2.95.3.  With gcc 2.95.3,
gcc emits one function with a hidden parameter.  c++ programmers
and gdb are both familiar with hidden parameters ('this').
If I recall correctly, Apple modified gcc 3.X to do something
similar.

Michael C


             reply	other threads:[~2004-07-16 19:31 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-07-16 19:59 Michael Elizabeth Chastain [this message]
2004-07-16 22:15 ` Jim Blandy
2004-07-17 14:30 ` Eli Zaretskii
2004-07-17 14:54   ` Daniel Jacobowitz
  -- strict thread matches above, loose matches on Subject: below --
2004-07-18 19:29 Michael Elizabeth Chastain
2004-07-19  3:58 ` Eli Zaretskii
2004-07-17 23:17 Michael Elizabeth Chastain
2004-07-18  5:05 ` Eli Zaretskii
2004-07-18 18:44   ` Daniel Jacobowitz
2004-07-18 19:03     ` Eli Zaretskii
2004-07-19  3:22       ` Daniel Jacobowitz
2004-07-19 14:51         ` Eli Zaretskii
2004-07-17 10:09 Michael Elizabeth Chastain
2004-07-15 13:55 Michael Elizabeth Chastain
2004-07-15 14:09 ` Daniel Jacobowitz
2004-07-16 11:11   ` Eli Zaretskii
2004-07-16 14:27     ` Daniel Jacobowitz
2004-07-17 10:30       ` Eli Zaretskii
2004-07-15 11:31 Michael Elizabeth Chastain
2004-07-16 13:17 ` Roland Zerek
2004-07-15 10:30 Roland Zerek

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=20040716193117.EFE514B104@berman.michael-chastain.com \
    --to=mec.gnu@mindspring.com \
    --cc=drow@false.org \
    --cc=eliz@gnu.org \
    --cc=gdb@sources.redhat.com \
    --cc=rolandz@poczta.fm \
    /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