From ac9f4ac86d1004b1c74ee1943cbaa4f24ad8aa7f Mon Sep 17 00:00:00 2001
From: David Zuelke <dzuelke@gmail.com>
Date: Thu, 9 Dec 2021 02:30:25 +0100
Subject: [PATCH] port from main/2.1: ignore all Return type deprecation
 warnings from Symfony and Composer namespaces
 (47cf602f9e900a9da65e01a91b3f94a4aacbf7c7,
 2be03f0d60a17b2fb05bb88d1754a84bf84641fc)

---
 src/Composer/Util/ErrorHandler.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Composer/Util/ErrorHandler.php b/src/Composer/Util/ErrorHandler.php
index c4dabd1d7..a504c4b0a 100644
--- a/src/Composer/Util/ErrorHandler.php
+++ b/src/Composer/Util/ErrorHandler.php
@@ -52,6 +52,12 @@ class ErrorHandler
         }
 
         if (self::$io) {
+            // ignore symfony/* deprecation warnings about return types
+            // also ignore them from the Composer namespace, as 1.x won't get all that fixed anymore
+            if (preg_match('{^Return type of (Symfony|Composer)\\\\.*ReturnTypeWillChange}is', $message)) {
+                return true;
+            }
+
             self::$io->writeError('<warning>Deprecation Notice: '.$message.' in '.$file.':'.$line.'</warning>');
             if (self::$io->isVerbose()) {
                 self::$io->writeError('<warning>Stack trace:</warning>');