Since TYPO3 4.3, deprecated functions are logged to a file called "deprecation log file" under ./typo3conf called deprecation_xxxxxxx.log.
"A deprecation log has been introduced to track calls to deprecated/outdated methods in the TYPO3 Core. Developers have to make sure to adjust their code to avoid using this old functionality since deprecated methods will be removed in future TYPO3 releases! The information can be found in /typo3conf/deprecation_[hash-value].log The install tool has a setting "enableDeprecationLog" that allows one to disable the logging of deprecation messages since the file might grow quite fast depending on the extensions installed."
A lot of extension can fail in newer TYPO3 versions. The goal of this wiki page is to describe TYPO3 extensions that might be affected in future.
Please add your extensions below.
How to enable and disable the deprecation log
Method 1: Install Tool
In "All Configuration", search for "enableDeprecationLog". Possible settings are listed. An empty field disables the deprecation log. Save the settings by clicking the button "Write to LocalConfiguration.php".
Method 2: LocalConfiguration.php
Edit ./typo3conf/LocalConfiguration.php and set an empty string for enableDeprecationLog:
$TYPO3_CONF_VARS['SYS']['enableDeprecationLog'] = '';
Then, delete the temp_CACHED_... files to make the change effective.
In the deprecation log, messages like this one appear:
01-06-10 14:16: t3lib_div::fixed_lgd_pre() - since TYPO3 4.1 - Use either fixed_lgd() or fixed_lgd_cs() (with negative input value for $chars) - tx_tcdirectmail_module1->main#1066 // t3lib_div::fixed_lgd_pre#136 // t3lib_div::logDeprecatedFunction#562 (b/class.t3lib_div.php#561) 01-06-10 14:16: t3lib_div::fixed_lgd() - since TYPO3 4.1 - Works ONLY for single-byte charsets! Use t3lib_div::fixed_lgd_cs() instead - tx_tcdirectmail_module1->main#1066 // t3lib_div::fixed_lgd_pre#136 // t3lib_div::fixed_lgd#564 // t3lib_div::logDeprecatedFunction#535 (b/class.t3lib_div.php#534)
The question is: should this be fixed by the extension maintainer? The developer of this extension does no longer maintain it; nor can be reached by his email address.
This is a dire situation as this is the only TYPO3 direct mail extension that is able to send out periodic (e.g. bi-weekly) newsletters.