Add tests for bug #55755

sapi/cli/tests/php_cli_server_006.phpt

@@ -0,0 +1,45 @@
+--TEST--
+Bug #55755 (SegFault when outputting header WWW-Authenticate)
+--SKIPIF--
+<?php
+include "skipif.inc"; 
+if (substr(PHP_OS, 0, 3) == 'WIN') {
+    die ("skip not for Windows");
+}
+?>
+--FILE--
+<?php
+include "php_cli_server.inc";
+php_cli_server_start('var_dump($_SERVER["PHP_AUTH_USER"], $_SERVER["PHP_AUTH_PW"]);');
+
+list($host, $port) = explode(':', PHP_CLI_SERVER_ADDRESS);
+$port = intval($port)?:80;
+
+$fp = fsockopen($host, $port, $errno, $errstr, 0.5);
+if (!$fp) {
+  die("connect failed");
+}
+
+if(fwrite($fp, <<<HEADER
+GET / HTTP/1.1
+Host: {$host}
+Authorization: Basic Zm9vOmJhcg==
+
+
+HEADER
+)) {
+	while (!feof($fp)) {
+		echo fgets($fp);
+	}
+}
+
+?>
+--EXPECTF--	
+HTTP/1.1 200 OK
+Host: %s
+Connection: closed
+X-Powered-By: PHP/%s-dev
+Content-type: text/html
+
+string(3) "foo"
+string(3) "bar"