Date: Tue, 28 Sep 1999 11:13:42 -0700 (PDT) From: John Polstra <jdp@polstra.com> To: drdavis@calderasystems.com Cc: hackers@freebsd.org Subject: Re: Netscape Bus Error Message-ID: <199909281813.LAA12154@vashon.polstra.com> In-Reply-To: <37F0DC3D.7F4A969D@calderasystems.com> References: <49064d67.252125e1@aol.com> <199909272010.OAA12060@mt.sri.com> <37F0DC3D.7F4A969D@calderasystems.com>
next in thread | previous in thread | raw e-mail | index | archive | help
In article <37F0DC3D.7F4A969D@calderasystems.com>, Darren R. Davis <drdavis@calderasystems.com> wrote: > I believe that a Bus Error is specifically referencing miss aligned > data vs segmentation violation (SIGSEGV) which is accessing data > that is either free'd or not yours, etc. That was the traditional distinction, but it's different on FreeBSD/i386. SIGSEGV means you accessed memory that is unmapped. SIGBUS means you accessed memory that is mapped, but protected (unwritable and/or unreadable). To further confuse matters, FreeBSD/alpha generates SIGSEGV for both cases. John -- John Polstra jdp@polstra.com John D. Polstra & Co., Inc. Seattle, Washington USA "No matter how cynical I get, I just can't keep up." -- Nora Ephron To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199909281813.LAA12154>