From 56aaa23e01e97d43ee677946cb2e9ba75d8aac1f Mon Sep 17 00:00:00 2001
From: kemo <kemal.delalic@gmail.com>
Date: Wed, 11 Mar 2026 13:33:08 +0100
Subject: [PATCH] Ignore unreachable fwrite in leftover flush block

---
 src/PhpSpreadsheet/Reader/Csv.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/PhpSpreadsheet/Reader/Csv.php b/src/PhpSpreadsheet/Reader/Csv.php
index 58c12a400..9cbb4d6e8 100644
--- a/src/PhpSpreadsheet/Reader/Csv.php
+++ b/src/PhpSpreadsheet/Reader/Csv.php
@@ -370,10 +370,10 @@ class Csv extends BaseReader
             }
         }
 
-        // Flush any remaining bytes
+        // Flush any remaining bytes (incomplete multi-byte chars will throw)
         if ($leftover !== '') {
             $converted = StringHelper::convertEncoding($leftover, 'UTF-8', $encoding);
-            fwrite($outputHandle, $converted);
+            fwrite($outputHandle, $converted); // @codeCoverageIgnore
         }
 
         fclose($sourceHandle);