Derrick Stolee <dstolee@xxxxxxxxxxxxx> writes:
> Shallow clones do not interact well with the commit-graph feature for
> several reasons. Instead of doing the hard thing to fix those
> interactions, instead prevent reading or writing a commit-graph file for
> shallow repositories.
The latter instead would want to vanish, I would guess.
>
> Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
> ---
> commit-graph.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/commit-graph.c b/commit-graph.c
> index 95af4ed519..80e377b90f 100644
> --- a/commit-graph.c
> +++ b/commit-graph.c
> @@ -208,6 +208,9 @@ static void prepare_commit_graph(void)
> return;
> prepare_commit_graph_run_once = 1;
>
> + if (is_repository_shallow())
> + return;
> +
> obj_dir = get_object_directory();
> prepare_commit_graph_one(obj_dir);
> prepare_alt_odb();
> @@ -711,6 +714,15 @@ void write_commit_graph(const char *obj_dir,
> int num_extra_edges;
> struct commit_list *parent;
>
> + /*
> + * Shallow clones are not supproted, as they create bad
> + * generation skips as they are un-shallowed.
> + */
> + if (is_repository_shallow()) {
> + warning("writing a commit-graph in a shallow repository is not supported");
> + return;
> + }
> +
> oids.nr = 0;
> oids.alloc = approximate_object_count() / 4;
