Re: [Xen-devel] [PATCH] libxl: compile fix

[Christoph Egger <Christoph.Egger@xxxxxxx>]

On Wednesday 28 July 2010 14:22:37 Ian Campbell wrote:
> On Wed, 2010-07-28 at 12:42 +0100, Christoph Egger wrote:
> > Hi!
> >
> > Attached patch fixes this compile error:
> >
> > xl_cmdimpl.c: In function 'create_domain':
> > xl_cmdimpl.c:1099: warning: 'action' may be used uninitialized in this
> > function
>
> Thanks.
>
> This can't actually happen in practice today since the switch statement
> covers all of the possible values of info->shutdown_reason. (in a
> previous version of the series which introduced this code
> shutdown_reason was an enum so the compiler knew this).
>
> However to be robust it is probably worth adding a default: case to the
> switch and logging the unknown shutdown code.
>
> Ian.
>
>
> Subject: xl: log unknown domain shutdown reason and default to destroy
>
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
>
> diff -r 479d042f25e4 tools/libxl/xl_cmdimpl.c
> --- a/tools/libxl/xl_cmdimpl.c        Wed Jul 28 12:07:44 2010 +0100
> +++ b/tools/libxl/xl_cmdimpl.c        Wed Jul 28 13:21:16 2010 +0100
> @@ -1113,6 +1113,9 @@ static int handle_domain_death(libxl_ctx
>      case SHUTDOWN_watchdog:
>          action = d_config->on_watchdog;
>          break;
> +    default:
> +        LOG("Unknown shutdown reason code %s. Destroying domain.",
> info->shutdown_reason); +        action = ACTION_DESTROY;
>      }
>
>      LOG("Action for shutdown reason code %d is %s", info->shutdown_reason,
> action_on_shutdown_names[action]);
>

Acked-by: Christoph Egger <Christoph.Egger@xxxxxxx>


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