Re: [libvirt] [PATCH] xen: Fix inside_daemon being unused when libvirtd is disabled

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On 04/23/2010 11:00 AM, Matthias Bolte wrote:
> The defined __sun is there, because inside_daemon is used in xenUnifiedOpen
> if __sun is defined. Also initialize it to 0.
> ---
>  src/xen/xen_driver.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
> 
> diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c
> index 5ab169d..b16a16a 100644
> --- a/src/xen/xen_driver.c
> +++ b/src/xen/xen_driver.c
> @@ -70,7 +70,9 @@ static struct xenUnifiedDriver const * const drivers[XEN_UNIFIED_NR_DRIVERS] = {
>  #endif
>  };
>  
> -static int inside_daemon;
> +#if defined WITH_LIBVIRTD || defined __sun

ACK on this line.

> +static int inside_daemon = 0;

NAK on this change.  C89 guarantees that static variables are
initialized to 0, thanks to the .bss.  And although gcc can optimize
explicit initialization to 0 to use the .bss, not all compilers do that,
so you end up with a larger binary for no reason.

-- 
Eric Blake   eblake@xxxxxxxxxx    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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