On Wed 30 Nov 2016 02:18:33 AM CET, Max Reitz wrote:
> int bdrv_open_backing_file(BlockDriverState *bs, QDict *parent_options,
> const char *bdref_key, Error **errp)
> {
> - char *backing_filename = g_malloc0(PATH_MAX);
> + char *backing_filename = NULL;
> char *bdref_key_dot;
> const char *reference = NULL;
> int ret = 0;
> @@ -1511,7 +1505,7 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict
> *parent_options,
>
> reference = qdict_get_try_str(parent_options, bdref_key);
> if (reference || qdict_haskey(options, "file.filename")) {
> - backing_filename[0] = '\0';
> + backing_filename = NULL;
You're making it NULL, but it's NULL already.
Otherwise the patch looks fine.
Berto