Re: [Xen-devel] [PATCH] xen: Fix format string

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Philippe Mathieu-Daudé [mailto:philmd@xxxxxxxxxx]
> Sent: 16 January 2019 12:01
> To: qemu-devel@xxxxxxxxxx
> Cc: Paul Durrant <Paul.Durrant@xxxxxxxxxx>; Anthony Perard
> <anthony.perard@xxxxxxxxxx>; Max Reitz <mreitz@xxxxxxxxxx>; qemu-
> block@xxxxxxxxxx; Stefano Stabellini <sstabellini@xxxxxxxxxx>; xen-
> devel@xxxxxxxxxxxxxxxxxxxx; Kevin Wolf <kwolf@xxxxxxxxxx>; Philippe
> Mathieu-Daudé <philmd@xxxxxxxxxx>
> Subject: [PATCH] xen: Fix format string
> 
> Trivial format string fix to solve:
> 
>   hw/block/xen-block.c: In function 'xen_block_realize':
>   hw/block/xen-block.c:218:53: error: format '%lu' expects argument of
> type 'long unsigned int', but argument 4 has type 'int64_t {aka long long
> int}' [-Werror=format=]
>       xen_device_backend_printf(xendev, "sectors", "%lu",
>                                                       ^
>                                 blk_getlength(conf->blk) /
>                                 conf->logical_block_size);
> 
> blk_getlength() returns an int64_t.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>

Reviewed-by: Paul Durrant <paul.durrant@xxxxxxxxxx>

> ---
>  hw/block/xen-block.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
> index be28b63442..3cf215b730 100644
> --- a/hw/block/xen-block.c
> +++ b/hw/block/xen-block.c
> @@ -215,7 +215,7 @@ static void xen_block_realize(XenDevice *xendev, Error
> **errp)
> 
>      xen_device_backend_printf(xendev, "sector-size", "%u",
>                                conf->logical_block_size);
> -    xen_device_backend_printf(xendev, "sectors", "%lu",
> +    xen_device_backend_printf(xendev, "sectors", "%lld",
>                                blk_getlength(conf->blk) /
>                                conf->logical_block_size);
> 
> --
> 2.17.2

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