From: Andrew Cagney <ac131313@redhat.com>
To: Josef Wolf <jw@raven.inka.de>
Cc: Kevin Buettner <kevinb@redhat.com>, gdb@sources.redhat.com
Subject: Re: Why malloc() when target code is executed?
Date: Mon, 25 Aug 2003 22:08:00 -0000 [thread overview]
Message-ID: <3F4A88C3.4030603@redhat.com> (raw)
In-Reply-To: <20030825195635.GA32349@raven.inka.de>
> On Mon, Aug 25, 2003 at 11:25:31AM -0700, Kevin Buettner wrote:
>
>> On Aug 22, 10:48pm, Josef Wolf wrote:
>>
>
>> > I just noticed that ``print printf("Hello\n")'' call malloc() on the
>> > target to allocate the memory for the string. AFAICS, this memory
>> > never gets freed. Is there any reason not to allocate this memory
>> > on the stack? This would avoid this memory leak. In addition, this
>> > would make it possible to use this feature on embedded systems which
>> > often have either restricted memory or even dont have malloc() at all.
>
>>
>> For printf(), allocating the string on the stack is (usually) okay.
>> This is because printf() doesn't return a pointer to the string nor
>> does it write the string pointer to some data structure in the
>> inferior process. Functions which did either of these could/would end
>> up with a dangling pointer if the string were to be allocated on the
>> stack.
>
>
> Ahhh, I see there is good reason for current behavior. Had not thought
> about this one. Thanks for clarifying this.
The doco should probably mention this. What to file a bug report (or a
patch?).
Andrew
next prev parent reply other threads:[~2003-08-25 22:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-22 20:49 Josef Wolf
2003-08-25 18:25 ` Kevin Buettner
2003-08-25 19:57 ` Josef Wolf
2003-08-25 22:08 ` Andrew Cagney [this message]
2003-08-27 16:50 ` David Taylor
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=3F4A88C3.4030603@redhat.com \
--to=ac131313@redhat.com \
--cc=gdb@sources.redhat.com \
--cc=jw@raven.inka.de \
--cc=kevinb@redhat.com \
/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