ext/date truncates error messages with null bytes

date_throw_uninitialized_error() (C function):

<?php

$o = new class extends DateTime {
    public function __construct() {}
};
var_dump(get_class($o));
$o->format("");

OnUpdate_date_timezone ini handler:

<?php

ini_set("date.timezone", "foo\0bar");

php_date_initialize() (C function):

<?php

new DateTimeImmutable("foo\0bar");

php_date_modify() (C function):

<?php

$now = new DateTime();
$now->modify("foo\0bar");

date_interval_initialize() (C function):

<?php

new DateInterval("foo\0bar");

php_date_interval_initialize_from_hash() (C function):

<?php

var_dump(unserialize("O:12:\"DateInterval\":2:{s:11:\"from_string\";b:1;s:11:\"date_string\";s:7:\"foo\0bar\";}"));

date_interval_create_from_date_string() (C function):

<?php

date_interval_create_from_date_string("foo\0bar");

DateInterval::createFromDateString():

<?php

DateInterval::createFromDateString("foo\0bar");

date_period_initialize() (C function):

<?php

DatePeriod::createFromISO8601String("foo\0bar");

date_period_initialize() (C function):

<?php

DatePeriod::createFromISO8601String("foo\0bar");

date_default_timezone_set():

<?php

date_default_timezone_set("foo\0bar");

date_period_unset_property() (C function):

<?php

$o = new class() extends DatePeriod {
    public function __construct() {}
};
unset($o->start);

Tested with 3v4l

Start in the ext/date implementation at the named C functions and reproduce the listed null-byte cases with the provided PHP snippets. Trace how each error message is built, then add coverage for the affected paths and verify that the resulting messages preserve the relevant input; run the date extension tests to confirm all listed entry points.