Re: [Qemu-devel] [PATCH] monitor: introduce query-config-schema command

[Amos Kong <akong@redhat.com>]

On Wed, Apr 24, 2013 at 07:44:37PM -0600, Eric Blake wrote:
> On 04/24/2013 07:35 PM, Luiz Capitulino wrote:
> 
> >>                      case QEMU_OPT_SIZE:                                                     
> >>                          param_info->type = CONFIG_PARAM_TYPE_SIZE;                          
> >>                          break;
> >>                      }     
> > 
> > Looks good.
> > 
> >> I think we don't need default here, until some add new items in enum
> >> QemuOptType without update this code.
> > 
> > Maybe we can have:
> > 
> > 	default:
> > 	 abort();
> > 
> > So that we catch new QEmuOpts types not accompanied by a new ConfigParamType
> > type.
> 
> gcc is able to warn about missed options if you omit a default case (and
> if the switch was on an actual enum type); but does not warn about
> missed options if you do have a default case.  Libvirt has actually been
> switching to default-free coding styles on any switch statement where we
> expect an enum will grow in the future, for that reason.

util/qemu-config.c: In function ‘qmp_query_command_line_options’:
util/qemu-config.c:60:17: error: enumeration value ‘QEMU_OPT_NEW’ not
handled in switch [-Werror=switch]
cc1: all warnings being treated as errors

Good! no need default case here.

-- 
			Amos.