commit ca56dadb4b65ccaeab809d80db80a312dc00941a
author René Scharfe <l.s.r@web.de> Sat Mar 13 17:17:22 2021 +0100
committer Junio C Hamano <gitster@pobox.com> Sat Mar 13 16:00:09 2021 -0800
tree fa027eb80d076ebf7be7c3ea69a92cf47e594a1c
parent f1121499e6460e814ec3cffa0b18942ac529f768

use CALLOC_ARRAY

Add and apply a semantic patch for converting code that open-codes
CALLOC_ARRAY to use it instead.  It shortens the code and infers the
element size automatically.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

cache-tree.c

diff --git a/cache-tree.c b/cache-tree.c
index 2fb483d..add1f07 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -564,7 +564,7 @@ static struct cache_tree *read_one(const char **buffer, unsigned long *size_p)
 	 * hence +2.
 	 */
 	it->subtree_alloc = subtree_nr + 2;
-	it->down = xcalloc(it->subtree_alloc, sizeof(struct cache_tree_sub *));
+	CALLOC_ARRAY(it->down, it->subtree_alloc);
 	for (i = 0; i < subtree_nr; i++) {
 		/* read each subtree */
 		struct cache_tree *sub;