X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/secnet/blobdiff_plain/f164f167ccbde79444f82ca5ad43cd59630578f6..a094a1bae5bcadfb96a57a3d31c1aa7c8815631d:/secnet.h

diff --git a/secnet.h b/secnet.h
index 628a755..78dc676 100644
--- a/secnet.h
+++ b/secnet.h
@@ -114,7 +114,7 @@ extern cstring_t *dict_keys(dict_t *dict);
 
 /* List-manipulation functions */
 extern list_t *list_new(void);
-extern int32_t list_length(list_t *a);
+extern int32_t list_length(const list_t *a);
 extern list_t *list_append(list_t *a, item_t *i);
 extern list_t *list_append_list(list_t *a, list_t *b);
 /* Returns an item from the list (index starts at 0), or NULL */