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4. Release notes for version 8.4.2

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6. Release notes for version 8.4.4

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5. Release notes for version 8.4.3

5.1. Highlights

This is a bug-fix release resolving several regressions introduced in 8.4.1.

The highlights, since the 8.4.2 release, are:

  • A bug (Trac #15068) causing GHC to produce assembler that would be rejected by some versions of GNU Binutils, has been fixed.
  • GHC.Compact.compact now properly handles SmallArrays (Trac #13857)
  • A bug (Trac #15038) resulting in memory corruption and crashes in some uses of unboxed sums has been fixed.
  • GHC now logs a message when an environment file is loaded (Trac #15145).

5.2. Full details

In addition to the highlights listed above, this release resolves a number of other issues, described below.

5.2.1. Compiler

No changes beyond those listed in Highlights.

5.2.2. Runtime system

  • A bug causing aggressive potentially resulting in crashes when (nursery chunks) are used with a changing capability count has been fixed.

5.2.3. Template Haskell

No changes.

5.2.4. ghc library

No changes.

5.2.5. base library

  • Version bumped to 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.

5.2.6. integer-gmp library

No changes.

5.2.7. Build system

No changes.

5.3. 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.

Package Version Reason for inclusion
ghc 8.4.4 The compiler itself
Cabal Dependency of ghc-pkg utility
Win32 Dependency of ghc library
array Dependency of ghc library
base Core library
binary Dependency of ghc library
bytestring Deppendency of ghc library
containers Dependency of ghc library
deepseq Dependency of ghc library
directory Dependency of ghc library
filepath 1.4.2 Dependency of ghc library
ghc-boot 8.4.4 Internal compiler library
ghc-compact Core library
ghc-prim Core library
ghci 8.4.4 The REPL interface
haskeline Dependency of ghci executable
hpc Dependency of hpc executable
integer-gmp Core library
mtl 2.2.2 Dependency of Cabal library
parsec Dependency of Cabal library
process Dependency of ghc library
template-haskell Core library
text Dependency of Cabal library
time Dependency of ghc library
transformers Dependency of ghc library
unix Dependency of ghc library
xhtml 3000.2.2.1 Dependency of haddock executable