diff options
| -rw-r--r-- | iov.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/iov.c b/iov.c index b3330610bb..60705c73ab 100644 --- a/iov.c +++ b/iov.c @@ -146,6 +146,13 @@ ssize_t iov_send_recv(int sockfd, struct iovec *iov, unsigned iov_cnt, { ssize_t ret; unsigned si, ei; /* start and end indexes */ + if (bytes == 0) { + /* Catch the do-nothing case early, as otherwise we will pass an + * empty iovec to sendmsg/recvmsg(), and not all implementations + * accept this. + */ + return 0; + } /* Find the start position, skipping `offset' bytes: * first, skip all full-sized vector elements, */ |