Date: Tue, 28 Sep 1999 12:10:49 -0700 (PDT) From: Alex Belits <abelits@phobos.illtel.denver.co.us> To: "Darren R. Davis" <drdavis@calderasystems.com> Cc: Nate Williams <nate@mt.sri.com>, Scm486@aol.com, freebsd-hackers@FreeBSD.ORG Subject: Re: Netscape Bus Error Message-ID: <Pine.LNX.4.02A.9909281208490.18466-100000@phobos.illtel.denver.co.us> In-Reply-To: <37F0DC3D.7F4A969D@calderasystems.com>
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On Tue, 28 Sep 1999, Darren R. Davis 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.
> I always thought
> it strange on an Intel processor, since this was more a 68K/RISC thing.
> The only penalty on Intel
> was taking many more cycles to complete. Of course I haven't looked that
> deeply at what the
> code handling for the bus error signal really detects. But, never the
> less, it is still a Netscape bug.
It's SIGSEGV in disguise -- netscape intercepts it and generates SIGBUS:
---8<---
abelits@es1840$ netscape&
[1] 67114
abelits@es1840$ kill -SEGV 67114
abelits@es1840$ [1]+ Bus error netscape
abelits@es1840$
--->8---
--
Alex
----------------------------------------------------------------------
Excellent.. now give users the option to cut your hair you hippie!
-- Anonymous Coward
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