Description:
------------
From https://wiki.php.net/rfc/generators I learned that finally blocks are valid in Generators:

> If the generator contains (relevant) finally blocks those will be run.

When I iterate over such a generator and would throw an exception the exception seems to be swallowed. This behaviour was introduced in PHP-5.6 as it worked in PHP-5.5 as I would expect it: http://3v4l.org/QX4qP

I can't tell if this is related to https://bugs.php.net/bug.php?id=62210.

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

function generate()
{
    try {
        yield 1;
        yield 2;

    } finally {
        echo "finally\n";
    }
}

foreach (generate() as $i) {
    echo $i, "\n";
    throw new Exception();
}


Expected result:
----------------
1
finally
Fatal error: Uncaught exception 'Exception'

Actual result:
--------------
1
finally