[Libvir] [PATCH] Detect heap allocation failure; factor out some duplication.

[Daniel P. Berrange]

On Thu, Nov 29, 2007 at 07:35:47PM +0100, Jim Meyering wrote:
> "Daniel P. Berrange" <berrange at redhat.com> wrote:
> 
> > On Wed, Nov 28, 2007 at 02:18:22PM +0100, Jim Meyering wrote:
> >> I spotted a few unchecked heap allocations (strdup, malloc, calloc)
> >> in qemud.c and have fixed it so such failure evokes a proper diagnostic
> >> rather than e.g., a segfault.
> >
> > Yep, good stuff.
> >
> >> I've also arranged to free some of the memory upon failure,
> >> but not all (see comments for why).
> >>
> >> In spite of those additions, this patch factors out enough
> >> duplication that the net change is to remove a few lines from the
> >> file.  Although in general I prefer to factor things out into
> >> separate functions, in this case, it seemed better to use macros.
> >
> > I really don't like the macros, particularly when the macro definitions
> > are inline to the function. I'd prefer to see these helpers as separate
> > functions. The compiler is perfectly able to decide whether to inline
> > the code or not & it makes it more friendly to edit & read when it is
> > using separate functions.
> 
> I've rewritten to use fewer macros.
> In the process, I did a little testing, and will
> add an automated test to give this code some coverage
> in a separate patch.

Ok, this looks good to me now.

Can you commit the code changes, but leave out the config file changes - I've
re-written/structured major parts of the config file in my SASL patches, so
I'll just include the few typos you found in my updated patches.


Regards,
Dan.
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