TYPO3 Core

I think the faulty code is located in \TYPO3\CMS\Core\DataHandling\DataHandler

public function checkValue_input_Eval($value, $evalArray, $is_in) {

case 'time':
                case 'timesec':
                case 'date':
                case 'datetime':
                    // a hyphen as first character indicates a negative timestamp
                    if ((strpos($value, '-') === false && strpos($value, ':') === false) || strpos($value, '-') === 0) {
                        $value = (int)$value;
                    } else {
                        // ISO 8601 dates
                        $dateTime = new \DateTime($value);
                        // The returned timestamp is always UTC
                        $value = $dateTime->getTimestamp();
                    }
                    // $value is a UTC timestamp here.
                    // The value will be stored in the server’s local timezone, but treated as UTC, so we brute force
                    // subtract the offset here. The offset is subtracted instead of added because the value is stored
                    // in the timezone, but interpreted as UTC, so if we switched the server to UTC, the correct
                    // value would be returned.
                    if ($value !== 0 && !$this->dontProcessTransformations) {
                        $value -= date('Z', $value);
                    }
                    break;

You can NOT handle all those eval values the same way. The input '23:45' with 'time' will produce a timestamp for the current day and not a relative one!

This fixes the issue (tested for 'time'):

case 'time':
case 'timesec':
case 'date':
case 'datetime':
// a hyphen as first character indicates a negative timestamp
if ((strpos($value, '-') === false && strpos($value, ':') === false) || strpos($value, '-') === 0) {
$value = (int)$value;
} else {
switch ($func) {
case 'time':
$valueArr = explode(':', $value);
$value = $valueArr⁰ * 3600 + $valueArr¹ * 60;
break;
case 'timesec':
$valueArr = explode(':', $value);
$value = $valueArr⁰ * 3600 + $valueArr¹ * 60 + $valueArr²;
break;
case 'date':
case 'datetime':
// ISO 8601 dates
$dateTime = new \DateTime($value);
// The returned timestamp is always UTC
$value = $dateTime->getTimestamp();

// $value is a UTC timestamp here.
                                // The value will be stored in the server’s local timezone, but treated as UTC, so we brute force
                                // subtract the offset here. The offset is subtracted instead of added because the value is stored
                                // in the timezone, but interpreted as UTC, so if we switched the server to UTC, the correct
                                // value would be returned.
                                if ($value !== 0 && !$this->dontProcessTransformations) {
                                    $value -= date('Z', $value);
                                }
                                break;
                        }
                    }
                    break;

Patch set 1 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/51966

Patch set 1 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/51970

Patch set 2 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/51970

Patch set 3 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/51970