Hi Adrian, On Wed, Oct 04, 2023 at 11:59AM, John Paul Adrian Glaubitz wrote: > > 2. An unregisterised GHC 9.0.2 is *also* broken on powerpc, producing > > code that overflows integers. We are also seeing unregisterised GHC > > 9.4.6 on i386 being broken, since the tests for haskell-quickcheck fail > > (see > > https://buildd.debian.org/status/package.php?p=haskell-quickcheck&suite=sid). > > The plan for i386 is to registerise GHC and use the LLVM backend by > > default (to avoid the baseline violation). > > I see.
A small update here. I didn't manage to use the LLVM backend on i386, seems to be broken [1]. Instead, I believe I have managed to fix unregisterised GHC on 32-bit, by backporting these two patches [2] [3]. Can you try building an unregisterised GHC 9.4.7 on powerpc and see if this resolves the issues you have with integer overflows? Note that GHC 9.4.7 *with* the Hadrian build system is now available on experimental. [1] https://gitlab.haskell.org/ghc/ghc/-/issues/24018 [2] https://salsa.debian.org/haskell-team/DHG_packages/-/blob/a38be7c092b024de04280f0a72642baf283cea01/p/ghc/debian/patches/fix-32-bit-unreg [3] https://salsa.debian.org/haskell-team/DHG_packages/-/blob/a38be7c092b024de04280f0a72642baf283cea01/p/ghc/debian/patches/fix-hs_cmpxchg64 -- Ilias
