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.
JuliaLang · Mar 2, 2021 · 05e6650 · 05e6650
1 parent 49387b2
commit 05e6650
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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