From: Nick Lewycky <nlewycky@google.com>
Date: Thu, 16 Apr 2015 18:15:58 +0000 (-0700)
Subject: Change this offsetof computation to use c89 offsetof. Tested:
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ed6ae04d6867e588233f18791e9ad061268016c;p=thirdparty%2Fglibc.git

Change this offsetof computation to use c89 offsetof. Tested:
---

diff --git a/socket/sys/un.h b/socket/sys/un.h
index 332ba0ecc79..8a3a9c7016c 100644
--- a/socket/sys/un.h
+++ b/socket/sys/un.h
@@ -40,7 +40,7 @@ struct sockaddr_un
 
 #ifdef __USE_MISC
 /* Evaluate to actual length of the `sockaddr_un' structure.  */
-# define SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path)	      \
+# define SUN_LEN(ptr) (offsetof(struct sockaddr_un, sun_path)                 \
 		      + strlen ((ptr)->sun_path))
 #endif