From 2f58dc31e80348533fdb08ef578fba49d2c30ef6 Mon Sep 17 00:00:00 2001 From: anlan_cs Date: Thu, 12 May 2022 22:14:11 -0400 Subject: [PATCH] lib: add one check in "list_sort()" Add one check in `list_sort()`: Immediatly return if no any items in this list. Signed-off-by: anlan_cs --- lib/linklist.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/lib/linklist.c b/lib/linklist.c index 8137b68d84..8519482885 100644 --- a/lib/linklist.c +++ b/lib/linklist.c @@ -370,10 +370,15 @@ void list_sort(struct list *list, int (*cmp)(const void **, const void **)) int i = -1; void *data; size_t n = list->count; - void **items = XCALLOC(MTYPE_TMP, (sizeof(void *)) * n); + void **items; int (*realcmp)(const void *, const void *) = (int (*)(const void *, const void *))cmp; + if (!n) + return; + + items = XCALLOC(MTYPE_TMP, (sizeof(void *)) * n); + for (ALL_LIST_ELEMENTS(list, ln, nn, data)) { items[++i] = data; list_delete_node(list, ln); -- 2.39.5