1 files changed, 3 insertions, 2 deletions

diff --git a/src/process.c b/src/process.c
index 989511967ce..29bf43e0f29 100644
--- a/src/process.c
+++ b/src/process.c
@@ -88,6 +88,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #endif
 
 #include <c-ctype.h>
+#include <flexmember.h>
 #include <sig2str.h>
 #include <verify.h>
 
@@ -3807,8 +3808,8 @@ usage: (make-network-process &rest ARGS)  */)
         struct gaicb gaicb;
         struct addrinfo hints;
         char str[FLEXIBLE_ARRAY_MEMBER];
-      } *req = xmalloc (offsetof (struct req, str)
-                        + hostlen + 1 + portstringlen + 1);
+      } *req = xmalloc (FLEXSIZEOF (struct req, str,
+                                    hostlen + 1 + portstringlen + 1));
       dns_request = &req->gaicb;
       dns_request->ar_name = req->str;
       dns_request->ar_service = req->str + hostlen + 1;