Description:
------------
The idn_to_ascii and idn_to_utf8 functions, when used with the variant INTL_IDNA_VARIANT_UTS46, do not populate their 4th argument ($idna_info) when the given domain name is longer than 254 characters. The length of the domain name in the test script is 264 characters.

Test script:
---------------
https://3v4l.org/5nYOF

Expected result:
----------------
I expect that the $idna_info would be an array populated with the "result", "isTransitionalDifferent", and "errors" keys.  The "errors" key in the test case should have a value matching the value of the IDNA_ERROR_DOMAIN_NAME_TOO_LONG constant.

array(3) {
    "result" => "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb.cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc.dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd.google-analytics.com",
    "isTransitionalDifferent" => false,
    "errors" => 4
}

Actual result:
--------------
$idna_info is an empty array, providing no feedback on why the process failed.

array(0) {
}