--TEST--
Bug #29890 (crash if error handler fails)
--FILE--
<?php
function customErrorHandler($fErrNo,$fErrStr,$fErrFile,$fErrLine) {
echo "error :".$fErrStr."\n";
}

set_time_limit(5);

error_reporting(E_ALL);

set_error_handler("customErrorHandler");

define("TEST",2);

//should return a notice that the constant is already defined

define("TEST",3);

?>
--EXPECT--
error :Constant TEST already defined, this will be an error in PHP 9