Commit 9f802777 authored by Ben Gamari's avatar Ben Gamari 🐢

users-guide: Add release notes for 8.6.2

parent d2cd150e
.. _release-8-6-2:
Release notes for version 8.6.2
===============================
GHC 8.6.2 is a bug-fix release, fixing a few regressions found in 8.6.1.
Highlights
----------
The highlights, since the 8.6.2 release, are:
- A long-standing bug exposed in GHC 8.6.1, :ghc-ticket:`15696`, has been fixed.
This issue resulted in undefined runtime behavior with some uses of the
``dataToTag#`` primop. Note that this issue, while less likely to manifest,
has existed in some form in all GHC releases prior to this release and may
result in silent, incorrect evaluation. For this reason, users are strongly
encouraged to upgrade to 8.6.2.
- A long-standing bug in the LLVM code generator (:ghc-ticket:`14251`),
resulting in incorrect floating point evaluation, has been fixed.
- Several compiler panics observed in GHC 8.6.1 have been fixed
(:ghc-ticket:`15499`, :ghc-ticket:`15053`, :ghc-ticket:`15692`,
:ghc-ticket:`15695`)
- GHC now runs without complaining when installed to a read-only location on
Windows (:ghc-ticket:`15667`)
- An integer overflow, resulting in some ``encodeFloat`` uses returning
incorrect results, has been fixed (:ghc-ticket:`15271`)
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
......@@ -13,6 +13,7 @@ Contents:
license
intro
8.6.1-notes
8.6.2-notes
ghci
runghc
usage
......
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