1--TEST-- 2Bug #55705 (Omitting a callable typehinted argument causes a segfault) 3--FILE-- 4<?php 5function f(callable $c) {} 6f(); 7?> 8--EXPECTF-- 9Fatal error: Uncaught ArgumentCountError: Too few arguments to function f(), 0 passed in %s on line 3 and exactly 1 expected in %s:2 10Stack trace: 11#0 %s(%d): f() 12#1 {main} 13 thrown in %s on line %d 14