public inbox for gcc-prs@sourceware.org
help / color / mirror / Atom feed
From: aj@gcc.gnu.org
To: dirkjan@magma-da.com, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
	nobody@gcc.gnu.org
Subject: Re: c++/10882: passing and return by reference of char pointer corrupted on x86_64
Date: Tue, 20 May 2003 13:07:00 -0000	[thread overview]
Message-ID: <20030520130752.17015.qmail@sources.redhat.com> (raw)

Synopsis: passing and return by reference of char pointer corrupted on x86_64

State-Changed-From-To: open->closed
State-Changed-By: aj
State-Changed-When: Tue May 20 13:07:52 2003
State-Changed-Why:
    The code is invalid, you do the following basically:
    int number;
    void *ptr;
    ptr = &number;
    *ptr = NULL;
    
    Note that int is 32-bit and a pointer is 64-bit on x86-64.
    You therefore override some random memory, in this case
    the string popped_name.
    
    Since your code is not 64-bit clean, and you explicitly
    shut GCC up with casts to void, there's not much that GCC can do and it will produce this code.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10882


             reply	other threads:[~2003-05-20 13:07 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-20 13:07 aj [this message]
  -- strict thread matches above, loose matches on Subject: below --
2003-05-20 12:36 dirkjan

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=20030520130752.17015.qmail@sources.redhat.com \
    --to=aj@gcc.gnu.org \
    --cc=dirkjan@magma-da.com \
    --cc=gcc-bugs@gcc.gnu.org \
    --cc=gcc-gnats@gcc.gnu.org \
    --cc=gcc-prs@gcc.gnu.org \
    --cc=nobody@gcc.gnu.org \
    /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 read-only IMAP folder(s) and NNTP newsgroup(s).