Re: [PATCH] ref-filter.c: fix a leak in get_head_description

["Rubén Justo" <rjusto@gmail.com>]

On 26/9/22 10:14, Ævar Arnfjörð Bjarmason wrote:
> 
> Thanks, this looks good to me. FWIW I have a local (still unsubmitted)
> series of leak fixes across the tree which fixed this leak, that commit
> is presented below as a "I've already been running with this for a
> while" data point.

That call in die_if_some_operation_in_progress is a good addition to this fix.
I haven't found a happy path that leaks there yet, but it is calling for it
anyway.  And the commit message looks good to me too.  So you can add to that
patch, if you want:

Reviewed-by: Rubén Justo <rjusto@gmail.com>


Thanks Martin for your review!

Un saludo.

> 
> Thanks!
> 
> -- >8 --
> Subject: [PATCH] wt-status API users: use wt_status_state_free_buffers(), fix
>  leaks
> 
> Fix a memory that was accidentally introduced in ref-filter.c in
> 2708ce62d21 (branch: sort detached HEAD based on a flag, 2021-01-07),
> and one that's been present in builtin/checkout.c since
> c45f0f525de (switch: reject if some operation is in progress,
> 2019-03-29).
> 
> In both cases we should be using the wt_status_state_free_buffers()
> API introduced in 962dd7ebc3e (wt-status: introduce
> wt_status_state_free_buffers(), 2020-09-27).
> 
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
>  builtin/checkout.c | 2 ++
>  ref-filter.c       | 2 ++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/builtin/checkout.c b/builtin/checkout.c
> index 54373424403..549c3d17a1a 100644
> --- a/builtin/checkout.c
> +++ b/builtin/checkout.c
> @@ -1469,6 +1469,8 @@ static void die_if_some_operation_in_progress(void)
>  		      "or \"git worktree add\"."));
>  	if (state.bisect_in_progress)
>  		warning(_("you are switching branch while bisecting"));
> +
> +	wt_status_state_free_buffers(&state);
>  }
>  
>  static int checkout_branch(struct checkout_opts *opts,
> diff --git a/ref-filter.c b/ref-filter.c
> index 45908d4bdfc..81278ec3cf7 100644
> --- a/ref-filter.c
> +++ b/ref-filter.c
> @@ -1722,6 +1722,8 @@ char *get_head_description(void)
>  	} else
>  		strbuf_addstr(&desc, _("(no branch)"));
>  
> +	wt_status_state_free_buffers(&state);
> +
>  	return strbuf_detach(&desc, NULL);
>  }
>