Hello everyone, The GHC team is very happy to announce the availability of GHC 8.6.2, a bugfix release to GHC 8.6.1. The source distribution, binary distributions, and documentation for this release are available at
https://downloads.haskell.org/~ghc/8.6.2 The 8.6 release fixes several regressions present in 8.6.1 including: * A long-standing (but previously hard to manifest) bug resulting in undefined behavior for some applications of dataToTag# has been fixed (#15696) * An incorrect linker path to libgmp in the Mac OS binary distributions (#15404) * A regression rendering Windows installations to read-only directories unusable (#15667) * A regression resulting in panics while compiling some record updates of GADTs constructors (#15499) * A regression resulting in incorrect type errors when splicing types into constraint contexts has been fixed (#15815) * Around a dozen other issues. See Trac [1] for a full list of issues resolved in this release. Note that this release ships with one significant but long-standing bug (#14251): Calls to functions taking both Float# and Double# may result in incorrect code generation when compiled using the LLVM code generator. This is not a new issue, it has existed as long as the LLVM code generator has existed; however, changes in code generation in 8.6 made it more likely that user code using only lifted types will trigger it. Happy compiling! Cheers, - Ben [1] https://ghc.haskell.org/trac/ghc/query?status=closed&milestone=8.6.2&col=id&col=summary&col=status&col=type&col=priority&col=milestone&col=component&order=priority
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