X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fcontainer_of%2Fcontainer_of.h;h=0449935056f51a84af2a84f5b2dd7fcbf48c7678;hb=291237b4fed863be74051274ac5ad9920cb33cc3;hp=1c9d147ae06df9f4e0e54adea977f6087e4c628d;hpb=87f505a56eae7ef2a03a76b5b412d6bc46c58aae;p=ccan

diff --git a/ccan/container_of/container_of.h b/ccan/container_of/container_of.h
index 1c9d147a..04499350 100644
--- a/ccan/container_of/container_of.h
+++ b/ccan/container_of/container_of.h
@@ -1,3 +1,4 @@
+/* CC0 (Public domain) - see LICENSE file for details */
 #ifndef CCAN_CONTAINER_OF_H
 #define CCAN_CONTAINER_OF_H
 #include <stddef.h>
@@ -102,7 +103,7 @@
 	container_off(typeof(*var), member)
 #else
 #define container_off_var(var, member)			\
-	((char *)&(var)->member - (char *)(var))
+	((const char *)&(var)->member - (const char *)(var))
 #endif
 
 #endif /* CCAN_CONTAINER_OF_H */