From 05e665016c57072e9440532161fb3f581227053f Mon Sep 17 00:00:00 2001
From: Jeff Bezanson <jeff.bezanson@gmail.com>
Date: Tue, 2 Mar 2021 16:46:50 -0500
Subject: [PATCH] check for NULL handle in `_fd` (#39879)

In this case the object is in an invalid state, but it at least allows
printing the object so you can see that.
---
 base/stream.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/base/stream.jl b/base/stream.jl
index 81adf0c639623..509bc9953add6 100644
--- a/base/stream.jl
+++ b/base/stream.jl
@@ -1120,7 +1120,7 @@ _fd(x::Union{OS_HANDLE, RawFD}) = x
 
 function _fd(x::Union{LibuvStream, LibuvServer})
     fd = Ref{OS_HANDLE}(INVALID_OS_HANDLE)
-    if x.status != StatusUninit && x.status != StatusClosed
+    if x.status != StatusUninit && x.status != StatusClosed && x.handle != C_NULL
         err = ccall(:uv_fileno, Int32, (Ptr{Cvoid}, Ptr{OS_HANDLE}), x.handle, fd)
         # handle errors by returning INVALID_OS_HANDLE
     end