From 42ccf22fb7a0918dbcb79435eafa85669ee4b36b Mon Sep 17 00:00:00 2001
From: Robert Nagy <ronagy@icloud.com>
Date: Sat, 14 Dec 2019 20:47:01 +0100
Subject: [PATCH] doc: add note about fs.close() about undefined behavior

Add notes to fs.close and fs.closeSync() about udnefined behavior.

PR-URL: https://github.com/nodejs/node/pull/30966
Refs: https://github.com/nodejs/node/issues/30864
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 doc/api/fs.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/api/fs.md b/doc/api/fs.md
index 3768f0309ffff1..a45e171e352dbb 100644
--- a/doc/api/fs.md
+++ b/doc/api/fs.md
@@ -1533,6 +1533,9 @@ changes:
 Asynchronous close(2). No arguments other than a possible exception are given
 to the completion callback.
 
+Calling `fs.close()` on any file descriptor (`fd`) that is currently in use
+through any other `fs` operation may lead to undefined behavior.
+
 ## `fs.closeSync(fd)`
 <!-- YAML
 added: v0.1.21
@@ -1542,6 +1545,9 @@ added: v0.1.21
 
 Synchronous close(2). Returns `undefined`.
 
+Calling `fs.closeSync()` on any file descriptor (`fd`) that is currently in use
+through any other `fs` operation may lead to undefined behavior.
+
 ## `fs.constants`
 
 * {Object}