TYPO3 Core

Problem found in TYPO3 4.7. When retrieving language packs, I get lots of error messages shown as flash messages:

This is related to a developer configuration to show all problems that transforms PHP warning (that should be removed anyway) into fatal exceptions:

$TYPO3_CONF_VARS['SYS']['displayErrors'] = '1';
$TYPO3_CONF_VARS['SYS']['devIPmask'] = '*';
$TYPO3_CONF_VARS['SYS']['errorHandler'] = 't3lib_error_ErrorHandler';
$TYPO3_CONF_VARS['SYS']['errorHandlerErrors'] = E_ALL ^ E_NOTICE;
$TYPO3_CONF_VARS['SYS']['exceptionalErrors'] = 30711;
$TYPO3_CONF_VARS['SYS']['debugExceptionHandler'] = 't3lib_error_DebugExceptionHandler';
$TYPO3_CONF_VARS['SYS']['productionExceptionHandler'] = 't3lib_error_DebugExceptionHandler';
$TYPO3_CONF_VARS['SYS']['systemLogLevel'] = '0';
$TYPO3_CONF_VARS['SYS']['systemLog'] = 'error_log';
$TYPO3_CONF_VARS['SYS']['enable_errorDLOG'] = '1';
$TYPO3_CONF_VARS['SYS']['enable_exceptionDLOG'] = '1';
$TYPO3_CONF_VARS['SYS']['enableDeprecationLog'] = 'console';