The Ada 2012 Reference Manual is an enhanced version of the text of International Standard ISO/IEC 8652/2012(E) for the programming language Ada. The Ada 2012 Reference Manual combines all of the previous corrections of Technical Corrigendum 1 and Amendment 1 with changes and additions that improve the capabilities of the language and the reliability of programs written in the language. The Ada 2012 Reference Manual will replace the former versions as an indispensable working companion for anybody using Ada professionally or learning and studying the language systematically.

This book constitutes the refereed proceedings of the 18th Ada-Europe International Conference on Reliable Software Technologies, Ada-Europe 2013, was held in Berlin, Germany, in June 2013. The 11 full papers presented were carefully reviewed and selected from various submissions. They are organized in topical sections on multi-core and distributed systems; Ada and Spark; dependability; and real-time systems.

The Ada 2005 Reference Manual combines the International Standard ISO/IEC 8652/1995(E) for the programming language Ada with the corrections of the Technical Corrigendum 1 approved by ISO in February 2001 and with the Amendment 1 expected to be approved by ISO in late 2006 or early 2007. Both the Technical Corrigendum 1 and the Amendment 1 list only the changes made to the International Standard.

The Fifth International Conference on Reliable Software Technologies, Ada- Europe 2000, took place in Potsdam, Germany, June 26-30, 2000. It was - ganized by Ada Deutschland and sponsored by Ada-Europe, the European f- eration of national Ada societies, in cooperation with ACM SIGAda and the Gesellschaft fu ]r Informatik (GI). We gratefully acknowledge additional spons- ship by the DFG, the German Research Foundation, and by the Forschungsz- trum Karlsruhe. This year's conference marked the 20th anniversary of consecutive annual Ada-Europe conferences and the ?fth year of a conference focusing on the g- eral area of software reliability, in which Ada excels as one of the supporting technologies. The Y2K problem has put the importance of software reliability into the limelight of media and political attention. Luckily, the dire predictions about potentially disastrous failures of critical systems did not prove true at the turn of the year, most likely because an incredible e?ort was made to update existing software, modernize systems, check-out backup mechanisms, and so on. One cannot but wonder how much more reliable the software could have been if only apercentageofthefundsspentontheY2Kproblemhadgoneintoenhancements of reliability during the development and maintenance of the software."