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describe: pass oid struct by const pointer

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We pass a "struct object_id" to describe_blob() by value. This isn't
wrong, as an oid is composed only of copy-able values. But it's unusual;
typically we pass structs by const pointer, including object_ids. Let's
do so.

It similarly makes sense for us to hold that pointer in the callback
data (rather than yet another copy of the oid).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2025-08-18 16:59:29 -04:00 committed by Junio C Hamano
parent c44beea485
commit e715f77682
1 changed files with 4 additions and 4 deletions
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8
builtin/describe.c
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@ -490,7 +490,7 @@ static void describe_commit(struct object_id *oid, struct strbuf *dst)
struct process_commit_data {
struct object_id current_commit;
struct object_id looking_for;
const struct object_id *looking_for;
struct strbuf *dst;
struct rev_info *revs;
};
@ -505,7 +505,7 @@ static void process_object(struct object *obj, const char *path, void *data)
{
struct process_commit_data *pcd = data;
if (oideq(&pcd->looking_for, &obj->oid) && !pcd->dst->len) {
if (oideq(pcd->looking_for, &obj->oid) && !pcd->dst->len) {
reset_revision_walk();
describe_commit(&pcd->current_commit, pcd->dst);
strbuf_addf(pcd->dst, ":%s", path);
@ -514,7 +514,7 @@ static void process_object(struct object *obj, const char *path, void *data)
}
}
static void describe_blob(struct object_id oid, struct strbuf *dst)
static void describe_blob(const struct object_id *oid, struct strbuf *dst)
{
struct rev_info revs;
struct strvec args = STRVEC_INIT;
@ -554,7 +554,7 @@ static void describe(const char *arg, int last_one)
describe_commit(&oid, &sb);
else if (odb_read_object_info(the_repository->objects,
&oid, NULL) == OBJ_BLOB)
describe_blob(oid, &sb);
describe_blob(&oid, &sb);
else
die(_("%s is neither a commit nor blob"), arg);