4. Release notes for version 8.4.2¶

4.1. Highlights¶ This is a bug-fix release resolving several regressions introduced in 8.4.1. The highlights, since the 8.4.1 release, are: Fixed a regression causing uses of Control.Exception.evaluate to be incorrectly optimised, resulting in space leaks (Trac #13930)

to be incorrectly optimised, resulting in space leaks (Trac #13930) Fix a regression causing the interpreter to segmentation fault when built with profiling (Trac #14705)

DWARF debug information support has been significantly improved (Trac #14894, Trac #14779)

A regression in runtime performance of code involving newtype s has been fixed (Trac #14936)