Subject: [PATCH v8] git: use calloc instead of malloc where possible

From: "AreaZR via GitGitGadget" <[email-masked]>
Date: Wed, 18 Dec 2024 00:48:15 +0000

From: Seija Kijin <[email-masked]>

We can avoid having to call memset by calling calloc.

Signed-off-by: Seija <[email-masked]>
---
    git: use calloc instead of malloc where possible
    
    We can avoid having to call memset by calling calloc
    
    Signed-off-by: Seija [email-masked]

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1390%2FAreaZR%2Fcalloc-v8
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1390/AreaZR/calloc-v8
Pull-Request: https://github.com/git/git/pull/1390

Range-diff vs v7:

 1:  e91cea8dea8 ! 1:  b78f068b3a3 revision: use calloc instead of malloc where possible
     @@ Metadata
      Author: Seija Kijin <[email-masked]>
      
       ## Commit message ##
     -    revision: use calloc instead of malloc where possible
     +    git: use calloc instead of malloc where possible
      
     -    We can avoid having to call memset by calling calloc
     +    We can avoid having to call memset by calling calloc.
      
          Signed-off-by: Seija <[email-masked]>
      
     - ## builtin/pack-redundant.c ##
     -@@ builtin/pack-redundant.c: static inline struct llist_item *llist_item_get(void)
     - 	return new_item;
     - }
     - 
     --static inline void llist_init(struct llist **list)
     --{
     --	*list = xmalloc(sizeof(struct llist));
     --	(*list)->front = (*list)->back = NULL;
     --	(*list)->size = 0;
     --}
     --
     - static void llist_free(struct llist *list)
     - {
     - 	for (struct llist_item *i = list->front, *next; i; i = next) {
     -@@ builtin/pack-redundant.c: static struct llist * llist_copy(struct llist *list)
     - 	struct llist *ret;
     - 	struct llist_item *new_item, *old_item, *prev;
     - 
     --	llist_init(&ret);
     -+	CALLOC_ARRAY(ret, 1);
     - 
     - 	if ((ret->size = list->size) == 0)
     - 		return ret;
     -@@ builtin/pack-redundant.c: static void load_all_objects(void)
     - 	struct pack_list *pl = local_packs;
     - 	struct llist_item *hint, *l;
     - 
     --	llist_init(&all_objects);
     -+	CALLOC_ARRAY(all_objects, 1);
     - 
     - 	while (pl) {
     - 		hint = NULL;
     -@@ builtin/pack-redundant.c: static void cmp_local_packs(void)
     - 
     - 	/* only one packfile */
     - 	if (!pl->next) {
     --		llist_init(&pl->unique_objects);
     -+		CALLOC_ARRAY(pl->unique_objects, 1);
     - 		return;
     - 	}
     - 
     -@@ builtin/pack-redundant.c: static struct pack_list * add_pack(struct packed_git *p)
     - 		return NULL;
     - 
     - 	l.pack = p;
     --	llist_init(&l.remaining_objects);
     -+	CALLOC_ARRAY(l.remaining_objects, 1);
     - 
     - 	if (open_pack_index(p))
     - 		return NULL;
     -@@ builtin/pack-redundant.c: int cmd_pack_redundant(int argc, const char **argv, const char *prefix UNUSED, s
     - 		scan_alt_odb_packs();
     - 
     - 	/* ignore objects given on stdin */
     --	llist_init(&ignore);
     -+	CALLOC_ARRAY(ignore, 1);
     - 	if (!isatty(0)) {
     - 		struct object_id oid;
     - 		while (fgets(buf, sizeof(buf), stdin)) {
     -
       ## remote.c ##
      @@ remote.c: void apply_push_cas(struct push_cas_option *cas,

 remote.c    |  4 ++--
 submodule.c | 10 +++++-----
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/remote.c b/remote.c
index 10104d11e3c..462ff105273 100644
--- a/remote.c
+++ b/remote.c
@@ -2854,9 +2854,9 @@ void apply_push_cas(struct push_cas_option *cas,
 
 struct remote_state *remote_state_new(void)
 {
-	struct remote_state *r = xmalloc(sizeof(*r));
+	struct remote_state *r;
 
-	memset(r, 0, sizeof(*r));
+	CALLOC_ARRAY(r, 1);
 
 	hashmap_init(&r->remotes_hash, remotes_hash_cmp, NULL, 0);
 	hashmap_init(&r->branches_hash, branches_hash_cmp, NULL, 0);
diff --git a/submodule.c b/submodule.c
index 7ec564854d0..7707c6f48f0 100644
--- a/submodule.c
+++ b/submodule.c
@@ -1489,14 +1489,13 @@ struct fetch_task {
  */
 static const struct submodule *get_non_gitmodules_submodule(const char *path)
 {
-	struct submodule *ret = NULL;
+	struct submodule *ret;
 	const char *name = default_name_or_path(path);
 
 	if (!name)
 		return NULL;
 
-	ret = xmalloc(sizeof(*ret));
-	memset(ret, 0, sizeof(*ret));
+	CALLOC_ARRAY(ret, 1);
 	ret->path = name;
 	ret->name = name;
 
@@ -1536,8 +1535,9 @@ static struct fetch_task *fetch_task_create(struct submodule_parallel_fetch *spf
 					    const char *path,
 					    const struct object_id *treeish_name)
 {
-	struct fetch_task *task = xmalloc(sizeof(*task));
-	memset(task, 0, sizeof(*task));
+	struct fetch_task *task;
+
+	CALLOC_ARRAY(task, 1);
 
 	if (validate_submodule_path(path) < 0)
 		exit(128);

base-commit: 063bcebf0c917140ca0e705cbe0fdea127e90086
-- 
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