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patch-ids.c: use hashmap correctly

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As alluded to in the previous patch, the code in patch-ids.c is
using the hashmaps API wrong.

Luckily we do not have a bug, as all hashmap functionality that we use
here (hashmap_get) passes through the keydata.  If hashmap_get_next were
to be used, a bug would occur as that passes NULL for the key_data.

So instead use the hashmap API correctly and provide the caller required
data in the compare function via the first argument that always gets
passed and was setup via the hashmap_init function.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller 2017-06-30 12:14:06 -07:00 committed by Junio C Hamano
parent 7663cdc86c
commit 3da492f808
1 changed files with 4 additions and 4 deletions
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8
patch-ids.c
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@ -35,10 +35,10 @@ int commit_patch_id(struct commit *commit, struct diff_options *options,
* the side of safety. The actual value being negative does not have
* any significance; only that it is non-zero matters.
*/
static int patch_id_cmp(const void *unused_cmp_data,
static int patch_id_cmp(struct diff_options *opt,
struct patch_id *a,
struct patch_id *b,
struct diff_options *opt)
const void *unused_keydata)
{
if (is_null_oid(&a->patch_id) &&
commit_patch_id(a->commit, opt, &a->patch_id, 0))
@ -59,7 +59,7 @@ int init_patch_ids(struct patch_ids *ids)
DIFF_OPT_SET(&ids->diffopts, RECURSIVE);
diff_setup_done(&ids->diffopts);
hashmap_init(&ids->patches, (hashmap_cmp_fn)patch_id_cmp,
NULL, 256);
&ids->diffopts, 256);
return 0;
}
@ -95,7 +95,7 @@ struct patch_id *has_commit_patch_id(struct commit *commit,
if (init_patch_id_entry(&patch, commit, ids))
return NULL;
return hashmap_get(&ids->patches, &patch, &ids->diffopts);
return hashmap_get(&ids->patches, &patch, NULL);
}
struct patch_id *add_commit_patch_id(struct commit *commit,