[Haskell-cafe] [ANNOUNCE] GHC 8.4.2 released
ben at well-typed.com
Fri Apr 20 00:01:22 UTC 2018
The GHC team is pleased to announce the availability of GHC 8.4.2. The
source distribution, binary distributions, and documentation for this
release are available at
This release is a bug-fix release, fixing numerous regressions and bugs
present in GHC 8.4.1. These include:
* A regression resulting in some uses of `Control.Exception.evaluate`
to be inappropriately optimised away (see #13930)
* A regression resulting in segmentation faults of programs compiled
with profiling (#14705)
* A bug causing runtime system panics while running programs with
retainer profiling (#14947)
* The configure scripts now accepts a `--disable-dtrace` option, again
allowing GHC to be bootstrapped on FreeBSD (#15040)
* The version number of the `base` package has been bumped to
220.127.116.11 to reflect the addition of the `GHC.IO.FixIOException` type.
This interface was added in 8.4.1 but the version bump was missed due to
* Support for DWARF debug information has been significantly improved
A more thorough list of the changes in this release can be found in the
Thanks to everyone who has contributed to developing, documenting, and
testing this release!
As always, let us know if you encounter trouble.
How to get it
The easy way is to go to the web page, which should be self-explanatory:
We supply binary builds in the native package format for many
platforms, and the source distribution is available from the same
Packages will appear as they are built - if the package for your
system isn't available yet, please try again later.
Haskell is a standard lazy functional programming language.
GHC is a state-of-the-art programming suite for Haskell. Included is
an optimising compiler generating efficient code for a variety of
platforms, together with an interactive system for convenient, quick
development. The distribution includes space and time profiling
facilities, a large collection of libraries, and support for various
language extensions, including concurrency, exceptions, and foreign
language interfaces. GHC is distributed under a BSD-style open source license.
A wide variety of Haskell related resources (tutorials, libraries,
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contact information, links to research groups) are available from the
Haskell home page (see below).
On-line GHC-related resources
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The list of platforms we support, and the people responsible for them,
Ports to other platforms are possible with varying degrees of
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We welcome new contributors. Instructions on accessing our source
code repository, and getting started with hacking on GHC, are
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