1--TEST-- 2Fiber::getReturn() from unstarted fiber 3--FILE-- 4<?php 5 6$fiber = new Fiber(fn() => Fiber::suspend(1)); 7 8$fiber->getReturn(); 9 10?> 11--EXPECTF-- 12Fatal error: Uncaught FiberError: Cannot get fiber return value: The fiber has not been started in %sget-return-from-unstarted-fiber.php:%d 13Stack trace: 14#0 %sget-return-from-unstarted-fiber.php(%d): Fiber->getReturn() 15#1 {main} 16 thrown in %sget-return-from-unstarted-fiber.php on line %d 17