Re: [Xen-devel] [PATCH v4 2/3] libxl: localtime(3) can return NULL

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Jul 22, 2015 at 03:19:08PM +0100, Ian Campbell wrote:
> On Fri, 2015-07-17 at 18:12 +0100, Wei Liu wrote:
> > On Fri, Jul 17, 2015 at 06:05:45PM +0100, Ian Jackson wrote:
> > > Wei Liu writes ("[PATCH v4 2/3] libxl: localtime(3) can return 
> > > NULL"):
> > > > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> > > 
> > > >          tm = localtime(&t);
> > > > +        if (!tm) {
> > > > +            LOG(ERROR, "Failed to call localtime");
> > > 
> > > localtime sets errno if it fails.  So you mean LOGE.
> > > 
> > 
> > Heh. Linux manpage doesn't say so. But
> > 
> > http://pubs.opengroup.org/onlinepubs/009695399/functions/localtime.ht
> > ml
> > 
> > does say that.
> > 
> > I will rework this patch and send it out next week with other 
> > coverity
> > scan inspired patches I accumulate.
> 
> Should we not be using localtime_t in libxl? Afterall we don't know
> what other threads in the application might be doing.
> 

I guess you mean localtime_r.

I agree with you we should use that one.

Wei.

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