Laravel4.2+HHVMでのバグっぽい挙動 ref: http://qiita.com/syo/items/0a84d0c4d90e6b4a1bd1

file0.txt

protected function compileEchos($value)
{

  // 引数の$valueをerror_logなどで確認すればよく分かる

  $difference = strlen($this->contentTags[0]) - strlen($this->escapedTags[0]);

  if ($difference > 0)
  {   
    return $this->compileEscapedEchos($this->compileRegularEchos($value));
  }   

  return $this->compileRegularEchos($this->compileEscapedEchos($value));
}