2.5. 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.
2.5.1. 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)
2.5.1.1. 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 | 9.4.8 | The compiler itself |
| Cabal-syntax | 3.8.1.0 | Dependency of ghc-pkg utility |
| Cabal | 3.8.1.0 | Dependency of ghc-pkg utility |
| Win32 | 2.12.0.1 | Dependency of ghc library |
| array | 0.5.4.0 | Dependency of ghc library |
| base | 4.17.2.1 | Core library |
| binary | 0.8.9.1 | Dependency of ghc library |
| bytestring | 0.11.5.3 | Dependency of ghc library |
| containers | 0.6.7 | Dependency of ghc library |
| deepseq | 1.4.8.0 | Dependency of ghc library |
| directory | 1.3.7.1 | Dependency of ghc library |
| exceptions | 0.10.5 | Dependency of ghc and haskeline library |
| filepath | 1.4.2.2 | Dependency of ghc library |
| ghc-boot-th | 9.4.8 | Internal compiler library |
| ghc-boot | 9.4.8 | Internal compiler library |
| ghc-compact | 0.1.0.0 | Core library |
| ghc-heap | 9.4.8 | GHC heap-walking library |
| ghc-prim | 0.9.1 | Core library |
| ghci | 9.4.8 | The REPL interface |
| haskeline | 0.8.2 | Dependency of ghci executable |
| hpc | 0.6.1.0 | Dependency of hpc executable |
| integer-gmp | 1.1 | Core library |
| libiserv | 9.4.8 | Internal compiler library |
| mtl | 2.2.2 | Dependency of Cabal library |
| parsec | 3.1.16.1 | Dependency of Cabal library |
| pretty | 1.1.3.6 | Dependency of ghc library |
| process | 1.6.18.0 | Dependency of ghc library |
| stm | 2.5.1.0 | Dependency of haskeline library |
| template-haskell | 2.19.0.0 | Core library |
| terminfo | 0.4.1.5 | Dependency of haskeline library |
| text | 2.0.2 | Dependency of Cabal library |
| time | 1.12.2 | Dependency of ghc library |
| transformers | 0.5.6.2 | Dependency of ghc library |
| unix | 2.7.3 | Dependency of ghc library |
| xhtml | 3000.2.2.1 | Dependency of haddock executable |