The GHC developers are happy to announce the availability of GHC 9.6.2. Binary
distributions, source distributions, and documentation are available at
downloads.haskell.org.
This release is primarily a bug-fix release addressing a few issues
found in 9.6.2. These include:
-
a number of simplifier and specialisation issues (#22761, #22549)
-
A bug resulting in crashes of programs using the new
listThreads#primop
(#23071). -
A compiler crash triggered by certain uses of quantified constraints
(#23171) -
Various bugs in the Javascript backend have been fixed (#23399,
#23360, #23346) -
A missing write barrier in the non-moving collector’s handling of selector
thunks, resulting in undefined behavior (#22930). -
The non-moving garbage collector’s treatment of weak pointers has been
revamped which should allow more reliable finalization ofWeak#
closures (#22327) -
The non-moving garbage collector now bounds the amount of marking it will
do during the post-marking stop-the-world phase, greatly reducing tail
latencies in some programs (#22929)
A full accounting of changes can be found in the release notes. As
some of the fixed issues do affect correctness users are encouraged to
upgrade promptly.
We would like to thank Microsoft Azure, GitHub, IOG, the Zw3rk stake pool,
Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, Haskell Foundation, and
other anonymous contributors whose on-going financial and in-kind support has
facilitated GHC maintenance and release management over the years. Finally,
this release would not have been possible without the hundreds of open-source
contributors whose work comprise this release.
As always, do give this release a try and open a ticket if you see
anything amiss.
Happy compiling,
~ Ben
