Description:
------------
After running a test script below, CLI SAPI correctly outputs an expected error message, but FPM SAPI (at least) doesn't. The error message contains some invalid characters after the class name. Also the name of class & method are completely missing in the message.
I also attached an url-encoded version (to preserve invalid characters) of the message caught by error_get_last() in a shutdown handler.

Test script:
---------------
<?php

$foo = new stdClass();
echo $foo->bar();

Expected result:
----------------
Fatal error: Call to undefined method stdClass::bar() in /www/temp.php on line 10

Actual result:
--------------
Fatal error: in /www/temp.php on line 10

----------------

URL-encoded version of the error message:
Fatal+Error+Call+to+undefined+method+stdClass%E0%08K%B4c%F0%CB%DB%0C%3A%3Abar()