Support PHP 8.1.0

.github/workflows/phpunit.yml

@@ -20,6 +20,7 @@ jobs:
           - "7.3"
           - "7.4"
           - "8.0"
+          - "8.1-rc"
         operating-system:
           - "ubuntu-latest"
           - "windows-latest"

src/Iterator/RecursiveDirectoryIterator.php

@@ -50,6 +50,7 @@ public function __construct($path, $flags = 0)
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function getChildren()
     {
         return new static($this->getPathname(), $this->getFlags());
@@ -58,6 +59,7 @@ public function getChildren()
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         $key = parent::key();
@@ -72,6 +74,7 @@ public function key()
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         $current = parent::current();

src/Iterator/RegexFilterIterator.php

@@ -94,6 +94,7 @@ public function __construct($regExp, $staticPrefix, Iterator $innerIterator, $mo
     /**
      * Rewind the iterator to the first position.
      */
+    #[\ReturnTypeWillChange]
     public function rewind()
     {
         parent::rewind();
@@ -106,6 +107,7 @@ public function rewind()
      *
      * @return int The current position.
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         if (!$this->valid()) {
@@ -124,6 +126,7 @@ public function key()
      *
      * @see Iterator::next()
      */
+    #[\ReturnTypeWillChange]
     public function next()
     {
         if ($this->valid()) {
@@ -137,6 +140,7 @@ public function next()
      *
      * @return bool Whether the path is accepted.
      */
+    #[\ReturnTypeWillChange]
     public function accept()
     {
         $path = ($this->mode & self::FILTER_VALUE) ? $this->current() : parent::key();