Commit 3ceffaaa authored by Ben Gamari's avatar Ben Gamari 🐢

Release notes for GHC 8.4.4

And embarrassingly, the release notes for 8.4.3 weren't included in the ToC.
parent 97f6de12
.. _release-8-4-4:
Release notes for version 8.4.4
===============================
Highlights
----------
This is a bug-fix release resolving several regressions introduced in 8.4.1.
The highlights, since the 8.4.3 release, are:
- A bug which could result in memory unsafety with certain uses of ``touch#``
has been resolved. (:ghc-ticket:`14346`)
- A compiler panic triggered by some GADT record updates has been fixed
(:ghc-ticket:`15499`)
- The ``text`` library has been updated, fixing several serious bugs in the
version shipped with GHC 8.4.3 (see `#227
<https://github.com/haskell/text/issues/227>`_,
`#221 <https://github.com/haskell/text/issues/221>`_, and `#197
<https://github.com/haskell/text/issues/197>`_.
- A serious code generation bug in the LLVM code generation, potentially resulting
in incorrect evaluation of floating point expressions, has been fixed
(:ghc-ticket:`14251`)
Full details
------------
In addition to the highlights listed above, this release resolves a number of
other issues, described below.
Compiler
~~~~~~~~
- A compiler panic triggered by case alternatives matching on invalid tags
returned by ``dataToTag#``, has been fixed (:ghc-ticket:`15436`)
- Package environments can now be explicitly disabled using the new
``-package-env -`` flag. (:ghc-ticket:`13753`)
Runtime system
~~~~~~~~~~~~~~
No changes.
Template Haskell
~~~~~~~~~~~~~~~~
No changes.
``ghc`` library
~~~~~~~~~~~~~~~
No changes.
``base`` library
~~~~~~~~~~~~~~~~
- Version bumped to 4.11.1.0 to account for the addition of
``GHC.IO.FixIOException``
- Add the ``readFieldHash`` function to ``GHC.Read`` which behaves like
``readField``, but for a field that ends with a ``#`` symbol.
``integer-gmp`` library
~~~~~~~~~~~~~~~~~~~~~~~
No changes.
Build system
~~~~~~~~~~~~
No changes.
Included libraries
------------------
The package database provided with this distribution also contains a number of
packages other than GHC itself. See the changelogs provided with these packages
for further change information.
.. ghc-package-list::
libraries/array/array.cabal: Dependency of ``ghc`` library
libraries/base/base.cabal: Core library
libraries/binary/binary.cabal: Dependency of ``ghc`` library
libraries/bytestring/bytestring.cabal: Deppendency of ``ghc`` library
libraries/Cabal/Cabal/Cabal.cabal: Dependency of ``ghc-pkg`` utility
libraries/containers/containers.cabal: Dependency of ``ghc`` library
libraries/deepseq/deepseq.cabal: Dependency of ``ghc`` library
libraries/directory/directory.cabal: Dependency of ``ghc`` library
libraries/filepath/filepath.cabal: Dependency of ``ghc`` library
compiler/ghc.cabal: The compiler itself
libraries/ghci/ghci.cabal: The REPL interface
libraries/ghc-boot/ghc-boot.cabal: Internal compiler library
libraries/ghc-compact/ghc-compact.cabal: Core library
libraries/ghc-prim/ghc-prim.cabal: Core library
libraries/haskeline/haskeline.cabal: Dependency of ``ghci`` executable
libraries/hpc/hpc.cabal: Dependency of ``hpc`` executable
libraries/integer-gmp/integer-gmp.cabal: Core library
libraries/mtl/mtl.cabal: Dependency of ``Cabal`` library
libraries/parsec/parsec.cabal: Dependency of ``Cabal`` library
libraries/process/process.cabal: Dependency of ``ghc`` library
libraries/template-haskell/template-haskell.cabal: Core library
libraries/text/text.cabal: Dependency of ``Cabal`` library
libraries/time/time.cabal: Dependency of ``ghc`` library
libraries/transformers/transformers.cabal: Dependency of ``ghc`` library
libraries/unix/unix.cabal: Dependency of ``ghc`` library
libraries/Win32/Win32.cabal: Dependency of ``ghc`` library
libraries/xhtml/xhtml.cabal: Dependency of ``haddock`` executable
......@@ -14,6 +14,8 @@ Contents:
intro
8.4.1-notes
8.4.2-notes
8.4.3-notes
8.4.4-notes
ghci
runghc
usage
......
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