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-rw-r--r--lib/bind.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/lib/bind.c b/lib/bind.c
index 512f3641d..e339e5869 100644
--- a/lib/bind.c
+++ b/lib/bind.c
@@ -32,9 +32,18 @@ int
rpl_bind (int fd, const struct sockaddr *sockaddr, socklen_t len)
{
SOCKET sock = FD_TO_SOCKET (fd);
- int r = bind (sock, sockaddr, len);
- if (r < 0)
- set_winsock_errno ();
- return r;
+ if (sock == INVALID_SOCKET)
+ {
+ errno = EBADF;
+ return -1;
+ }
+ else
+ {
+ int r = bind (sock, sockaddr, len);
+ if (r < 0)
+ set_winsock_errno ();
+
+ return r;
+ }
}