From 09b3e8cfa1874caeeecced015c7fb5614043b8a2 Mon Sep 17 00:00:00 2001
From: "Didier (did)" <did@odoo.com>
Date: Fri, 24 Dec 2021 10:08:36 +0000
Subject: [PATCH] [FIX] mail: temporary id should be negative
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Before this commit temporary id could match an existing attachment id and
replace that attachment by the new uploaded one.
Even if this is very unlikly, using a negative id avoid it completly.

closes odoo/odoo#82185

X-original-commit: c18705d1ced6a9b1d6bb8c33049a1248ae83cf18
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>
---
 .../mail/static/src/components/file_uploader/file_uploader.js   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/addons/mail/static/src/components/file_uploader/file_uploader.js b/addons/mail/static/src/components/file_uploader/file_uploader.js
index 3ab2f1e2a9c..1f4de9c67aa 100644
--- a/addons/mail/static/src/components/file_uploader/file_uploader.js
+++ b/addons/mail/static/src/components/file_uploader/file_uploader.js
@@ -12,7 +12,7 @@ const { useRef } = owl.hooks;
 const geAttachmentNextTemporaryId = (function () {
     let tmpId = 0;
     return () => {
-        tmpId += 1;
+        tmpId -= 1;
         return tmpId;
     };
 })();