Posts for the month of November 2017

GHC 8.2.2 is available

The GHC Team is pleased to announce a new minor release of GHC. This release builds on the performance and stability improvements of 8.2.1, fixing a variety of correctness bugs, improving error messages, and making the compiler more portable.

Notable bug-fixes include

  • A correctness issue resulting in segmentation faults in some FFI-users (#13707, #14346)
  • A correctness issue resulting in undefined behavior in some programs using STM (#14171)
  • A bug which may have manifested in segmentation faults in out-of-memory condition (#14329)
  • clearBit of Natural no longer bottoms (#13203)
  • A specialisation bug resulting in exponential blowup of compilation time in some specialisation-intensive programs (#14379)
  • ghc-pkg now works even in environments with misconfigured NFS mounts (#13945)
  • GHC again supports production of position-independent executables (#13702)

A thorough list of the changes in the release can be found in the release notes,

https://haskell.org/ghc/docs/8.2.2/html/users_guide/8.2.2-notes.html

How to get it

This release can be downloaded from

https://www.haskell.org/ghc/download_ghc_8_2_2.html

For older versions see

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.

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:

Supported Platforms

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

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

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.

Community Resources

There are mailing lists for GHC users, develpoers, and monitoring bug tracker activity; to subscribe, use the Mailman web interface.

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

Some GHC developers hang out on the #ghc and #haskell of the Freenode IRC network, too. See the Haskell wiki for details.

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