1--TEST-- 2GH-10990 (mail() throws TypeError after iterating over $additional_headers array by reference) 3--INI-- 4sendmail_path=rubbish 2>/dev/null 5--SKIPIF-- 6<?php 7if(substr(PHP_OS, 0, 3) == "WIN") 8 die("skip Won't run on Windows"); 9?> 10--FILE-- 11<?php 12$from = 'test@example.com'; 13$headers = ['From' => &$from]; 14var_dump(mail('test@example.com', 'Test', 'Test', $headers)); 15?> 16--EXPECT-- 17bool(false) 18