Serious bug in GHC 9.4 on basic math on aarch64

Matthew Pickering matthewtpickering at
Wed Oct 12 11:12:55 UTC 2022

Thank you for bringing this bug to our attention Ian, we have triaged
it as highest priority and will include a fix in the next release in
the 9.4 series.



On Wed, Oct 12, 2022 at 12:46 AM Ian-Woo Kim <ianwookim at> wrote:
> Hi,
> We found a reproducible error with a simple math test (div/mod) on
> aarch64. (on linux, on macos), so we want to call for attention on
> this.
> This was originally caught by this issue:
> Thank you!
> Ian-Woo Kim
> Mercury Technologies
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