1 files changed, 3 insertions, 0 deletions

diff --git a/crypto/compat/posix_win.c b/crypto/compat/posix_win.c
index 3e7d227..9409af5 100644
--- a/crypto/compat/posix_win.c
+++ b/crypto/compat/posix_win.c
@@ -163,6 +163,9 @@ wsa_errno(int err)
 static int
 is_socket(int fd)
 {
+        /* Border case: Don't break std* file descriptors */
+        if (fd < 3)
+                return 0;
         return (fd & 1) == 0; /* daringly assumes that any valid socket is even */
 }