From b40801a492cc5516ff0143b3e6978b1935326f24 Mon Sep 17 00:00:00 2001
From: Emanuele Iannone <eiannone@users.noreply.github.com>
Date: Sun, 23 Dec 2018 15:44:15 +0100
Subject: [PATCH] Fix erasing cookies issue

Prevent replacing existing cookies when starting or regenerating session on PHP < 7.3 with 'cookie_samesite' option.
See issue https://github.com/symfony/symfony/issues/29675
---
 .../HttpFoundation/Session/Storage/NativeSessionStorage.php   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
index 156a0d4555..232eb64cfd 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
@@ -153,7 +153,7 @@ class NativeSessionStorage implements SessionStorageInterface
         if (null !== $this->emulateSameSite) {
             $originalCookie = SessionUtils::popSessionCookie(session_name(), session_id());
             if (null !== $originalCookie) {
-                header(sprintf('%s; SameSite=%s', $originalCookie, $this->emulateSameSite));
+                header(sprintf('%s; SameSite=%s', $originalCookie, $this->emulateSameSite), false);
             }
         }
 
@@ -225,7 +225,7 @@ class NativeSessionStorage implements SessionStorageInterface
         if (null !== $this->emulateSameSite) {
             $originalCookie = SessionUtils::popSessionCookie(session_name(), session_id());
             if (null !== $originalCookie) {
-                header(sprintf('%s; SameSite=%s', $originalCookie, $this->emulateSameSite));
+                header(sprintf('%s; SameSite=%s', $originalCookie, $this->emulateSameSite), false);
             }
         }