On Wed, Aug 29, 2001 at 08:50:53AM +0200, Joerg Wunsch wrote:
> After upgrading to current-2001-08-28, my old BSD/OS Netscape 3 binary
> no longer works. It coredumps right away at startup, before opening
> any window. (Running it as "netscape3 -help", where it only produces
> a usage message, isn't affected.)
>
> Now the interesting part: i wanted to get an idea why this happened,
> and ran it through ktrace. Voila, that still works! Likewise when
> running through truss.
I saw something like this some time ago, too. In my case it was
because in kern_sysctl:ogetkerninfo(), in "case KINFO_BSDI_SYSINFO:",
the variable "size" is not always given a value. Maybe the patch in
http://www.FreeBSD.org/cgi/query-pr.cgi?pr=25476
fixes it for you, too?
(Hm, now I think my patch could need a comment: "size" will only be
returned if needed==0. There are two ways this can happen:
1) "case KINFO_BSDI_SYSINFO" has been executed:
In this case, "size" will have been set to 0, too. "size" is of size_t,
i.e. positive or 0.)
2) on of the other cases has been executed:
they all set "size".)
> Does anybody have an idea what might have changed,
If it's what I suspect, just the random inital value of "size" changed...
> and why's that odd behaviour with the syscall tracers?
I'd like to know that, too.
Bye, Philipp
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