TYPO3.Eel

during processing, in php-peg\Parser.php there' the following lines of code:

1    function store(&$result, $subres, $storetag = NULL) {
2        $result['text'] .= $subres['text'];

a var_dump of the $subres variable has the following ouput ending:

(...many similar arrays)

array(4) {
  ["_matchrule"]=>
  string(11) "Disjunction" 
  ["name"]=>
  string(11) "Disjunction" 
  ["text"]=>
  string(47) "context.children(this.getNodePath()).children()" 
  ["code"]=>
  string(164) "$context->getAndWrap('context')->callAndWrap('children', array($context->getAndWrap('this')->callAndWrap('getNodePath', array())))->callAndWrap('children', array())" 
}
array(3) {
  ["_matchrule"]=>
  string(10) "Identifier" 
  ["name"]=>
  string(10) "Identifier" 
  ["text"]=>
  string(6) "teaser" 
}
string(6) "teaser" 

(end of processing)

you see, the last occurence is a string; maybe due to a recursive call to the preceding Identifier/teaser thing.

Due to the fact $subres is in the very last case a string, $subres['text'] finally results in

1<!-- Exception while rendering page&lt;TYPO3.TYPO3:Page&gt;/body&lt;TYPO3.TypoScript:FluidRenderer&gt;/sections/teaser : Warning: Illegal string offset 'text' in C:\Users\afoeder\FLOW3\Flow3Org\Packages\Application\TYPO3.Eel\Resources\Private\PHP\php-peg\Parser.php line 171 -->

This kind of warning seems to be a PHP 5.4 issue only, but it's logically incorrect however.