Additional Comment Period for Upcoming Ada Revision

by brukardt

ISO/IEC JTC 1/SC 22/WG 9 (WG 9) is responsible for the maintenance and revision of the Ada Programming Language and associated standards and technical reports. As part of the language maintenance activity, WG 9 has established a group of Ada experts as the Ada Rapporteur Group (ARG). The ARG receives input from the Ada community at large to consider for inclusion in revision to the Ada programming language standard. The WG 9 has produced a number of revisions to the language in accordance with ISO policy and to address the evolution of technology (Ada 83, Ada 95, Ada 2005, Ada 2012).

Presently, the ARG is nearing completion on a revision to Ada 2012 (known for now as Ada 202x) which includes new contracts and lightweight parallelism features. Concern has been raised that these new proposals have not been prototyped nor has the suitability for diverse target environments been assessed.

Therefore, the ARG is seeking comments, based on prototyping and review, on the new features (focused on the parallelism features) incorporated within the current draft of the Ada 202X standard. Comments should be submitted to as described in the Ada Reference Manual Introduction ( Please include the draft number with any Ada Reference Manual references in your comment. Comments should be sent by 1 June 2020 in order to be considered for the revision. (Note: While not required, joining the mailing list as described at is recommended so that you receive any queries on or responses to your comment.)

The draft revision can be found at A list of issues addressed in Ada 202x can be found at

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