TYPO3 Core

I'm not sure if that bug relates to the current one:
http://bugs.typo3.org/bug_view_advanced_page.php?bug_id=0000645
Sebastian

I localized the reason in the index.php for the frontend:
In Line 261 the function $BE_USER->extPageReadAccess($TSFE->page) is called, which - for not-admin-users and pid==-1 (versioned page) - will call functions that need the TCA to be loaded.
The first function that needs the TCA is be t3lib_BEfunc::fixVersioningPid.
But: At this point no TCA is loaded. It will be loaded just a few lines later in the index.php: line 280 ($TSFE->getCompressedTCarray();

There seem to be two solutions to the problem:
1. Load TCA earlier in index.php. This would have to be in line 158:
<snip>
$TSFE->determineId();
$TSFE->getCompressedTCarray();
// Now, if there is a backend user logged in and he has NO access to this page, then re-evaluate the id shown!
if ($TSFE->beUserLogin && !$BE_USER->extPageReadAccess($TSFE->page)) {
</snip>

2. Check, if TCA is loaded and if not do so in t3lib_BEfunc::fixVersioningPid:
<snip>
global $TCA;
if (!is_array($TCA)) {
$GLOBALS['TSFE']->getCompressedTCarray();
}
if ($rr['pid']==-1 && $TCA[$table]['ctrl']['versioning']) {
</snip>

As I'm not sure which is the better way at all, I added both patches to the bugtracker.
Loading TCA before using functions that need it seems to be somehow "cleaner" to me. However, maybe it makes sence to add the tca-check to some other functions in t3lib_BEfunc as well...

(using 3.8.0)