From: Rusty Russell <rusty@rustcorp.com.au>
Date: Mon, 26 May 2014 03:40:02 +0000 (+0930)
Subject: container_of: work with -Wcast-qual
X-Git-Url: http://git.ozlabs.org/?p=ccan;a=commitdiff_plain;h=ba5ad771af4aa9e085498de6c3c665c52694460f

container_of: work with -Wcast-qual

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

diff --git a/ccan/container_of/container_of.h b/ccan/container_of/container_of.h
index 2943b8f0..04499350 100644
--- a/ccan/container_of/container_of.h
+++ b/ccan/container_of/container_of.h
@@ -103,7 +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 */