From 46f88a2c3d0f2794e52d27eaaeeac10195969db3 Mon Sep 17 00:00:00 2001
From: Jameson Nash <vtjnash@users.noreply.github.com>
Date: Wed, 29 Nov 2017 14:56:28 -0500
Subject: [PATCH] FileWatching: fix use-after-free (#24767)

---
 stdlib/FileWatching/src/FileWatching.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stdlib/FileWatching/src/FileWatching.jl b/stdlib/FileWatching/src/FileWatching.jl
index 1945fbd29e9b7..8512cae6b9e2b 100644
--- a/stdlib/FileWatching/src/FileWatching.jl
+++ b/stdlib/FileWatching/src/FileWatching.jl
@@ -191,11 +191,11 @@ mutable struct _FDWatcher
             associate_julia_struct(handle, this)
             err = ccall(:uv_poll_init_socket, Int32, (Ptr{Void},   Ptr{Void}, Ptr{Void}),
                                                       eventloop(), handle,    fd.handle)
-            finalizer(uvfinalize, this)
             if err != 0
                 Libc.free(handle)
                 throw(UVError("FDWatcher", err))
             end
+            finalizer(uvfinalize, this)
             return this
         end
     end