Merge pull request #276 from clue-labs/php8.5

Improve PHP 8.5+ support by avoiding deprecated `null` array offset

Author: WyriHaximus

.github/workflows/ci.yml

@@ -11,6 +11,7 @@ jobs:
     strategy:
       matrix:
         php:
+          - 8.5
           - 8.4
           - 8.3
           - 8.2
@@ -21,7 +22,7 @@ jobs:
           - 7.2
           - 7.1
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
       - uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
@@ -39,6 +40,7 @@ jobs:
     strategy:
       matrix:
         php:
+          - 8.5
           - 8.4
           - 8.3
           - 8.2
@@ -48,7 +50,7 @@ jobs:
           - 7.3
           - 7.2
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
       - uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}

src/Internal/CancellationQueue.php

@@ -41,7 +41,7 @@ public function enqueue($cancellable): void
 
     private function drain(): void
     {
-        for ($i = \key($this->queue); isset($this->queue[$i]); $i++) {
+        for ($i = \key($this->queue) ?? 0; isset($this->queue[$i]); $i++) {
             $cancellable = $this->queue[$i];
             assert(\method_exists($cancellable, 'cancel'));