Re: pkg/51432: net/net-snmp doesn't run on evbarm

[David Holland <dholland-pbugs%netbsd.org@localhost>]

The following reply was made to PR pkg/51432; it has been noted by GNATS.

From: David Holland <dholland-pbugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: pkg/51432: net/net-snmp doesn't run on evbarm
Date: Fri, 30 Sep 2016 07:12:22 +0000

 On Tue, Sep 06, 2016 at 05:45:00PM +0000, coypu%SDF.ORG@localhost wrote:
  >  Similar to toolchain/50939 (should probably be a package bug)
  >  which claims it works when compiled without -O2.
 
 I just made a conjecture in 50939 (that it's trashing its stack) that
 is worth checking in this case too.
 
 If it's not that, the fact that it's getting a failure return (-1)
 from sysctlbyname with errno set to 0 severely bounds what can be
 going on, as that's not supposed to happen. It's possible that the
 libc commit I just made will fix this, but it doesn't seem likely;
 however, unless I'm flagrantly not seeing something the only other
 source is getting failure with errno 0 back from the kernel in
 __sysctl. Running with ktrace should reveal whether this is happening
 or not.
 
 If not, trying after applying the change I just made to libc *might*
 show different behavior (as in, failing with a nonzero errno) but this
 is a pretty long shot.
 
 Could still be a compiler bug like originally suggested for 50939,
 too.
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost