Re: [Xen-devel] [PATCH] libxl: Introduce LIBXL_DOMAIN_TYPE_INVALID to make gcc happy

[Dario Faggioli <raistlin@xxxxxxxx>]

On Wed, 2012-05-23 at 15:36 +0100, Ian Jackson wrote:
> >     if isinstance(ty, idl.KeyedUnion):
> >         if parent is None:
> >             raise Exception("KeyedUnion type must have a parent")
> >         s += "switch (%s) {\n" % (parent + ty.keyvar.name)
> >         for f in ty.fields:
> >             (nparent,fexpr) = ty.member(v, f, parent is None)
> >             s += "case %s:\n" % f.enumname
> >             s += libxl_C_type_dispose(f.type, fexpr, indent + "    ", 
> > nparent)
> >             s += "    break;\n"
> > +       s += "default:\n    break;\n";
> >         s += "}\n"
> > 
> > Would it make sense?
> 
> No, I don't think so.  Surely the idl should contain an explicitly
> empty structure ?
> 
Well, that would work either, of course. :-)

Here's what I did, and it builds cleanly:

diff -r 6dc80df50fa8 tools/libxl/libxl_types.idl
--- a/tools/libxl/libxl_types.idl       Tue May 22 16:30:11 2012 +0200
+++ b/tools/libxl/libxl_types.idl       Wed May 23 17:19:52 2012 +0200
@@ -315,6 +316,7 @@ libxl_domain_build_info = Struct("domain
                                       # Use host's E820 for PCI passthrough.
                                       ("e820_host", libxl_defbool),
                                       ])),
+                 ("invalid", Struct(None, [])),
                  ], keyvar_init_val = "-1")),

New patch coming in a separate thread.

Thanks,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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