[PATCH wayland] scanner: Fail on empty enumerations

[Derek Foreman]

This looks good to me.

Reviewed-By: Derek Foreman <derekf at osg.samsung.com>

On 19/03/15 03:58 AM, Jonas Ådahl wrote:
> Without this patch, the scanner would generate invalid C which wouldn't
> compile anyway, so lets be nice and fail earlier and point out where the
> error is.
> 
> Signed-off-by: Jonas Ådahl <jadahl at gmail.com>
> ---
>  src/scanner.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/src/scanner.c b/src/scanner.c
> index 1f1e59a..64431a1 100644
> --- a/src/scanner.c
> +++ b/src/scanner.c
> @@ -551,6 +551,10 @@ end_element(void *data, const XML_Char *name)
>  		   strcmp(name, "event") == 0) {
>  		ctx->message = NULL;
>  	} else if (strcmp(name, "enum") == 0) {
> +		if (wl_list_empty(&ctx->enumeration->entry_list)) {
> +			fail(&ctx->loc, "enumeration %s was empty",
> +			     ctx->enumeration->name);
> +		}
>  		ctx->enumeration = NULL;
>  	}
>  }
>