--TEST-- Resume running fiber --FILE-- resume(); }); $fiber->start(); ?> --EXPECTF-- Fatal error: Uncaught FiberError: Cannot resume a fiber that is not suspended in %sresume-running-fiber.php:%d Stack trace: #0 %sresume-running-fiber.php(%d): Fiber->resume() #1 [internal function]: {closure}() #2 %sresume-running-fiber.php(%d): Fiber->start() #3 {main} thrown in %sresume-running-fiber.php on line %d