2.2. Version 9.4.4

The significant changes to the various parts of the compiler are listed in the following sections.

The LLVM backend of this release is to be used with LLVM 10, 11, 12, or 13.

2.2.1. Significant Changes

Issues fixed in this release include:

  • An issue where the wrong labels were used in the eventlog for events emitted when using info table profiling which was broken in 9.4.3. (#22452)
  • Fix a long standing bug where invalid eventlogs would be produced with long command lines. (#20221)
  • Fix another mistake in eta-expansion which resulted in serious performance regressions in 9.4.3. (#22424)
  • Fix the -fdefer-diagnostics. (#22391)
  • Fixes to several subtle compiler panics. (#22491, #22416, #22549, #22475, #22039)
  • Add correct write barries to IORef operations. (#22468)
  • The toolchain provided with Windows binary distributions now searches for its own headers and libraries before those of the host system’s msys2 installation (#22561) 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 9.4.5 The compiler itself
Cabal-syntax Dependency of ghc-pkg utility
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 Dependency of ghc library
containers 0.6.7 Dependency of ghc library
deepseq Dependency of ghc library
directory Dependency of ghc library
exceptions 0.10.5 Dependency of ghc and haskeline library
filepath Dependency of ghc library
ghc-boot-th 9.4.5 Internal compiler library
ghc-boot 9.4.5 Internal compiler library
ghc-compact Core library
ghc-heap 9.4.5 GHC heap-walking library
ghc-prim 0.9.0 Core library
ghci 9.4.5 The REPL interface
haskeline 0.8.2 Dependency of ghci executable
hpc Dependency of hpc executable
integer-gmp 1.1 Core library
libiserv 9.4.5 Internal compiler library
mtl 2.2.2 Dependency of Cabal library
parsec Dependency of Cabal library
pretty Dependency of ghc library
process Dependency of ghc library
stm Dependency of haskeline library
template-haskell Core library
terminfo Dependency of haskeline library
text 2.0.2 Dependency of Cabal library
time 1.12.2 Dependency of ghc library
transformers Dependency of ghc library
unix 2.7.3 Dependency of ghc library
xhtml 3000.2.2.1 Dependency of haddock executable