On Sun, Sep 23, 2018 at 10:55:14PM -0700, Ben Pfaff wrote:
On Sun, Sep 23, 2018 at 03:02:35PM +0200, John Darrington wrote:
> diff --git a/src/data/dataset.c b/src/data/dataset.c
> index 7a5a6a4a..15774eec 100644
> --- a/src/data/dataset.c
> +++ b/src/data/dataset.c
> @@ -293,7 +293,8 @@ dataset_set_dict (struct dataset *ds, struct
dictionary *dict)
> dataset_clear (ds);
>
> dict_destroy (ds->dict);
> - ds->dict = dict;
> + ds->dict = dict_clone (dict);
> +
> dict_set_change_callback (ds->dict, dict_callback, ds);
> }
The above is not obviously to me a safe change.
The caller might assume that the dictionary passed in is actually going
to be used as the dictionary; did you check whether the callers rely on
that?
You are right. That is another reason why ref-counting is a better
option.
Also, currently the dictionary takes ownership of the dictionary
argument, I believe, and it appears to me that this will leak that
dictionary.
Yep. I took the view that a memory leak was the lesser evil than
referencing freed memory.
J'
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