More php8.1 deprecation fixes, refs #10008

src/Composer/DependencyResolver/Decisions.php

@@ -142,31 +142,37 @@ class Decisions implements \Iterator, \Countable
         array_pop($this->decisionQueue);
     }
 
+    #[\ReturnTypeWillChange]
     public function count()
     {
         return \count($this->decisionQueue);
     }
 
+    #[\ReturnTypeWillChange]
     public function rewind()
     {
         end($this->decisionQueue);
     }
 
+    #[\ReturnTypeWillChange]
     public function current()
     {
         return current($this->decisionQueue);
     }
 
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return key($this->decisionQueue);
     }
 
+    #[\ReturnTypeWillChange]
     public function next()
     {
         prev($this->decisionQueue);
     }
 
+    #[\ReturnTypeWillChange]
     public function valid()
     {
         return false !== current($this->decisionQueue);

src/Composer/DependencyResolver/RuleSet.php

@@ -98,6 +98,7 @@ class RuleSet implements \IteratorAggregate, \Countable
         }
     }
 
+    #[\ReturnTypeWillChange]
     public function count()
     {
         return $this->nextRuleId;
@@ -116,6 +117,7 @@ class RuleSet implements \IteratorAggregate, \Countable
     /**
      * @return RuleSetIterator
      */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
         return new RuleSetIterator($this->getRules());

src/Composer/DependencyResolver/RuleSetIterator.php

@@ -33,16 +33,19 @@ class RuleSetIterator implements \Iterator
         $this->rewind();
     }
 
+    #[\ReturnTypeWillChange]
     public function current()
     {
         return $this->rules[$this->currentType][$this->currentOffset];
     }
 
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return $this->currentType;
     }
 
+    #[\ReturnTypeWillChange]
     public function next()
     {
         $this->currentOffset++;
@@ -67,6 +70,7 @@ class RuleSetIterator implements \Iterator
         }
     }
 
+    #[\ReturnTypeWillChange]
     public function rewind()
     {
         $this->currentOffset = 0;
@@ -86,6 +90,7 @@ class RuleSetIterator implements \Iterator
         } while (isset($this->types[$this->currentTypeOffset]) && !\count($this->rules[$this->currentType]));
     }
 
+    #[\ReturnTypeWillChange]
     public function valid()
     {
         return isset($this->rules[$this->currentType], $this->rules[$this->currentType][$this->currentOffset]);

src/Composer/Util/ErrorHandler.php

@@ -52,8 +52,8 @@ class ErrorHandler
         }
 
         if (self::$io) {
-            // ignore symfony/console deprecation warning
+            // ignore symfony/* deprecation warnings about return types
-            if (0 === strpos($message, 'Return type of Symfony\\Component\\Console\\Helper\\HelperSet::getIterator() should either be compatible with IteratorAggregate::getIterator')) {
+            if (preg_match('{^Return type of Symfony\\Component\\.*ReturnTypeWillChange}', $message)) {
                 return true;
             }