Work in progress ========================== C M U C L 21 c ============================= The CMUCL project is pleased to announce the release of CMUCL 21c. This is a major release which contains numerous enhancements and bug fixes from the 21a release. CMUCL is a free, high performance implementation of the Common Lisp programming language which runs on most major Unix platforms. It mainly conforms to the ANSI Common Lisp standard. CMUCL provides a sophisticated native code compiler; a powerful foreign function interface; an implementation of CLOS, the Common Lisp Object System, which includes multi-methods and a meta-object protocol; a source-level debugger and code profiler; and an Emacs-like editor implemented in Common Lisp. CMUCL is maintained by a team of volunteers collaborating over the Internet, and is mostly in the public domain. New in this release: * Known issues: * Feature enhancements * Changes * ASDF 3.2.1 * ANSI compliance fixes: * Bug fixes: * ENCODE-UNIVERSAL-TIME accepts dates from 1899 if the final date after accounting for time zones results in a positive value. (See ticket #36.) * CL:SLEEP no longer gets interrupted (See ticket #26.) * Trac Tickets: * Gitlab tickets: * Ticket #36: encode-universal-time signals error * Ticket #26: The cmucl that never sleeps * Other changes: * Improvements to the PCL implementation of CLOS: * Changes to building procedure: This release is not binary compatible with code compiled using CMUCL 21b; you will need to recompile FASL files. See or for more information, See for obtaining CMUCL, including sources and binaries.. We hope you enjoy using this release of CMUCL!