fix: overloading behaviour

features/access.feature

@@ -33,3 +33,7 @@ Feature: Session access
   Scenario: Iterate over non-populated session
     When data does not exist
     Then data is not iterated
+  Scenario: Overload the Session object
+    When data does not exist
+    Then array overloading succeeds
+    And object overloading succeeds

src/Session.php

@@ -46,7 +46,7 @@ public function __construct(string $name, ?string $id = null, array $contents =
      *
      * @throws RuntimeException if not initialized
      */
-    public function __get(string $name)
+    public function &__get(string $name)
     {
         if (!$this->isInitialized()) {
             throw new RuntimeException('Session not initialized');
@@ -133,7 +133,7 @@ public function offsetUnset($name): void
         unset($this->contents[$name]);
     }
 
-    public function offsetGet($name): mixed
+    public function &offsetGet($name): mixed
     {
         if (!$this->isInitialized()) {
             throw new RuntimeException('Session not initialized');

tests/behavior/AccessContext.php

@@ -65,7 +65,7 @@ public function propertyReadTriggersNoticeError(): void
     {
         try {
             $errorThrown = false;
-            $bar = $this->session->bar;
+            $bar = clone $this->session->bar;
             // @phpstan-ignore-next-line
         } catch (Throwable $e) {
             $errorThrown = true;
@@ -133,7 +133,7 @@ public function arrayAccessReadTriggersNoticeError(): void
     {
         try {
             $errorThrown = false;
-            $bar = $this->session['bar'];
+            $bar = clone $this->session['bar'];
             // @phpstan-ignore-next-line
         } catch (Throwable $e) {
             $errorThrown = true;
@@ -199,4 +199,38 @@ public function iteratorFails(): void
 
         Assert::assertSame(0, $counter);
     }
+
+    /**
+     * @Then array overloading succeeds
+     */
+    public function arrayOverloadSucceeds(): void
+    {
+        $error = false;
+
+        try {
+            $this->session['overload_me'] = [];
+            $this->session['overload_me'][] = 'foo';
+        } catch (\Exception $ex) {
+            $error = true;
+        }
+
+        Assert::assertFalse($error);
+    }
+
+    /**
+     * @Then object overloading succeeds
+     */
+    public function objectOverloadSucceeds(): void
+    {
+        $error = false;
+
+        try {
+            $this->session->overload_me = [];
+            $this->session->overload_me[] = 'foo';
+        } catch (\Exception $ex) {
+            $error = true;
+        }
+
+        Assert::assertFalse($error);
+    }
 }