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-rw-r--r--src/network/sendmmsg.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/network/sendmmsg.c b/src/network/sendmmsg.c
index ff9f8618..eeae1d0a 100644
--- a/src/network/sendmmsg.c
+++ b/src/network/sendmmsg.c
@@ -12,6 +12,7 @@ int sendmmsg(int fd, struct mmsghdr *msgvec, unsigned int vlen, unsigned int fla
* and the cmsg blocks cannot be modified in-place. */
int i;
if (vlen > IOV_MAX) vlen = IOV_MAX; /* This matches the kernel. */
+ if (!vlen) return 0;
for (i=0; i<vlen; i++) {
/* As an unfortunate inconsistency, the sendmmsg API uses
* unsigned int for the resulting msg_len, despite sendmsg