Date: Sat, 23 Sep 2000 23:20:02 -0500 (CDT) From: BSD <bsd@shell-server.com> To: Michael Allman <msa@dinosauricon.com> Cc: stable@FreeBSD.ORG Subject: Re: Constant panics on 4.1-STABLE! Message-ID: <Pine.BSF.4.10.10009232316590.62035-100000@marvin.shell-server.com> In-Reply-To: <Pine.BSF.4.21.0009200034460.421-100000@dinosaur.umbc.edu>
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On Wed, 20 Sep 2000, Michael Allman wrote:
> 132 /*
> 133 * Look up the address in the table for that Address Family
> 134 */
> 135 if (rnh && (rn = rnh->rnh_matchaddr((caddr_t)dst, rnh)) &&
> 136 ((rn->rn_flags & RNF_ROOT) == 0)) {
C doesn't guarantee order of execution in if ( bleh && bleh &&
bleh). It may very well evaluate it backwards, or from the inside out if
it wants. No?
> (kgdb) print rnh
> $1 = (struct radix_node_head *) 0x62000000
> (kgdb) print rn
> $2 = (struct radix_node *) 0x0
> (kgdb)
This goes to show rn is NULL (duh).
--Bart
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