From hurd-bug  Tue Aug 30 12:45:39 2016
From: Pino Toscano <toscano.pino () tiscali ! it>
Date: Tue, 30 Aug 2016 12:45:39 +0000
To: hurd-bug
Subject: Re: RFC: [PATCH] Enable olddelta to be NULL in adjtime(3)
Message-Id: <1909634.hQIzNno7c3 () thyrus ! usersys ! redhat ! com>
X-MARC-Message: https://marc.info/?l=hurd-bug&m=147256134216297

On Tuesday, 30 August 2016 14:32:32 CEST Svante Signell wrote:
> The glibc patch sysdeps_mach_hurd_adjtime.c.diff use a dummy struct timeval to
> avoid calling ___host_adjust_time() in _adjtime() with a NULL third argument.
> Smarter solutions can probably be found, comments are welcome.

You don't need to duplicate the whole __host_adjust_time call:

  struct timeval dummy;
  ..
  if (olddelta == NULL)
    olddelta = &dummy;

should be enough.

-- 
Pino Toscano