[ANNOUNCE] GHC 8.4.4 released

Ben Gamari ben at well-typed.com
Sun Oct 14 22:17:12 UTC 2018


Hello everyone,
The GHC team is pleased to announce the availability of GHC 8.4.4, a
patch-level release in the 8.4 series. The source distribution, binary
distributions, and documentation for this release are available at

    https://downloads.haskell.org/~ghc/8.4.4

This release fixes several bugs present in 8.4.3 These include,

  - A bug which could result in memory unsafety with certain uses of
    `touch#` has been resolved. (#14346)

  - A compiler panic triggered by some GADT record updates has been
    fixed (#15499)

  - The `text` library has been updated, fixing several serious bugs in
    the version shipped with GHC 8.4.3 (see `text` issues #227, #221,
    and #197.

  - A serious code generation bug in the LLVM code generation,
    potentially resulting in incorrect evaluation of floating point
    expressions, has been fixed (#14251)

As always, the full release notes can be found in the users guide,

    https://downloads.haskell.org/~ghc/8.4.4/docs/html/users_guide/8.4.4-notes.html

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:

        https://www.haskell.org/ghc/

We supply binary builds in the native package format for many
platforms, and the source distribution is available from the same
place.

Packages will appear as they are built - if the package for your
system isn't available yet, please try again later.

Background
~~~~~~~~~~

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,
specifications, documentation, compilers, interpreters, references,
contact information, links to research groups) are available from the
Haskell home page (see below).

On-line GHC-related resources
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Relevant URLs on the World-Wide Web:

GHC home page              https://www.haskell.org/ghc/
GHC developers' home page  https://ghc.haskell.org/trac/ghc/
Haskell home page          https://www.haskell.org/

Supported Platforms
~~~~~~~~~~~~~~~~~~~

The list of platforms we support, and the people responsible for them,
is here:

   https://ghc.haskell.org/trac/ghc/wiki/Contributors

Ports to other platforms are possible with varying degrees of
difficulty.  The Building Guide describes how to go about porting to a
new platform:

    https://ghc.haskell.org/trac/ghc/wiki/Building

Developers
~~~~~~~~~~

We welcome new contributors.  Instructions on accessing our source
code repository, and getting started with hacking on GHC, are
available from the GHC's developer's site run by Trac:

  https://ghc.haskell.org/trac/ghc/

Mailing lists
~~~~~~~~~~~~~

We run mailing lists for GHC users and bug reports; to subscribe, use
the web interfaces at

    https://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users
    https://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-tickets

There are several other haskell and ghc-related mailing lists on
www.haskell.org; for the full list, see

    https://mail.haskell.org/cgi-bin/mailman/listinfo

Some GHC developers hang out on #haskell on IRC, too:

    https://www.haskell.org/haskellwiki/IRC_channel

Please report bugs using our bug tracking system.  Instructions on
reporting bugs can be found here:

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