list: Make list_concat argument const

2 files changed, 2 insertions, 2 deletions

diff --git a/common/list.c b/common/list.c
index d38daa0..557e0dc 100644
--- a/common/list.c
+++ b/common/list.c
@@ -51,7 +51,7 @@ size_t list_find(struct list *list, const void *item) {
 	return -1;
 }
 
-void list_concat(struct list *list, struct list *source) {
+void list_concat(struct list *list, const struct list *source) {
 	if (list->length + source->length > list->capacity) {
 		while (list->length + source->length > list->capacity) {
 			list->capacity *= 2;
diff --git a/include/list.h b/include/list.h
index faeadd2..012f216 100644
--- a/include/list.h
+++ b/include/list.h
@@ -14,7 +14,7 @@ void list_free(struct list *list);
 void list_add(struct list *list, void *item);
 void list_insert(struct list *list, size_t index, void *item);
 void list_del(struct list *list, size_t index);
-void list_concat(struct list *list, struct list *source);
+void list_concat(struct list *list, const struct list *source);
 void list_truncate(struct list *list);
 void *list_pop_front(struct list *list);
 void *list_pop_back(struct list *list);