socket/tst-cmsghdr: Fix alignment of cmsghdr

The computation was correct on Linux only by luck because the cmsghdr size
is already aligned there.

diff --git a/socket/tst-cmsghdr-skeleton.c b/socket/tst-cmsghdr-skeleton.c
index e2b743a368fc48220d76730ce702ce0f68573462..9ad2d59d5fe345b80ba919d5eefb29e23204b1dc 100644 (file)
--- a/socket/tst-cmsghdr-skeleton.c
+++ b/socket/tst-cmsghdr-skeleton.c
@@ -56,7 +56,7 @@ RUN_TEST_FUNCNAME (CMSG_NXTHDR_IMPL) (void)
   /* The first header leaves just enough space to hold another header.  */
   cmsg = CMSG_FIRSTHDR (&m);
   TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
-  cmsg->cmsg_len = sizeof (cmsgbuf) - sizeof (struct cmsghdr);
+  cmsg->cmsg_len = sizeof (cmsgbuf) - CMSG_ALIGN (sizeof (struct cmsghdr));
   cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
   TEST_VERIFY_EXIT (cmsg != NULL);
 
@@ -75,7 +75,7 @@ RUN_TEST_FUNCNAME (CMSG_NXTHDR_IMPL) (void)
   TEST_VERIFY_EXIT (cmsg != NULL);
   cmsg->cmsg_len = sizeof (cmsgbuf)
                    - CMSG_SPACE (sizeof (PAYLOAD)) /* First header.  */
-                   - sizeof (struct cmsghdr);
+                   - CMSG_ALIGN (sizeof (struct cmsghdr));
   cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
   TEST_VERIFY_EXIT (cmsg != NULL);