#GNAT was initially released separately from the main GCC sources. On October 2, 2001, the GNAT sources were contributed to the GCC CVS repository. The last version to be released separately was GNAT 3.15p, based on GCC 2.8.1, on October 2, 2002. Starting with GCC 3.4, on major platforms the official GCC release is able to pass 100% of the ACATS #Ada tests included in the #GCC testsuite.

en.wikipedia.org/wiki/GNAT

Ada compiler

^{Contributors to Wikimedia projects (Wikimedia Foundation, Inc.)}