Add test for fibers created during cleanup

Author: trowski

Zend/tests/fibers/fiber-created-during-cleanup.phpt

@@ -0,0 +1,43 @@
+--TEST--
+Fibers created during cleanup
+--FILE--
+<?php
+
+$fibers = [];
+for ($i = 0; $i < 5; $i++) {
+    $fibers[$i] = new Fiber(function() {
+        try {
+            Fiber::suspend();
+        } finally {
+            echo "finally\n";
+            $fiber2 = new Fiber(function() {
+                echo "new\n";
+                try {
+                    Fiber::suspend();
+                } finally {
+                    echo "new finally\n";
+                }
+            });
+            $fiber2->start();
+        }
+    });
+    $fibers[$i]->start();
+}
+
+?>
+--EXPECT--
+finally
+new
+new finally
+finally
+new
+new finally
+finally
+new
+new finally
+finally
+new
+new finally
+finally
+new
+new finally