Simon Peyton Jones writes:

Also lots of tests give

ghc-stage2: panic! (the 'impossible' happened)

(GHC version 8.1.20160523 for x86_64-unknown-linux):

Binary.readBinMem: decompression failed

CallStack (from HasCallStack):

error, called at compiler/utils/Binary.hs:192:16 in ghc:Binary

Should I revert some hi-file compression patch?

I currently have a local build running to confirm the issue. That being said, Harbormaster doesn't seem to be seeing this particular issue (although it fails for other reasons). I wonder if you have some some old interface files hanging around. Does this help, git clean -fxd git submodule foreach git clean -fxd If that helps it would be nice if you could take note of which interface files it removes so we can update the build system to clean them. Cheers, - Ben

| Indeed I'm also seeing this. I will revert the compression patch. OK. When do you plan to do that? Simon | -----Original Message----- | From: Ben Gamari [mailto:ben@smart-cactus.org] | Sent: 23 May 2016 14:34 | To: Simon Peyton Jones ; Simon Peyton Jones | ; ghc-devs | Subject: RE: Build fails | | Ben Gamari writes: | | > [ Unknown signature status ] | > Simon Peyton Jones writes: | > | >> Also lots of tests give | >> | >> ghc-stage2: panic! (the 'impossible' happened) | >> | >> (GHC version 8.1.20160523 for x86_64-unknown-linux): | >> | >> Binary.readBinMem: decompression failed | >> | >> CallStack (from HasCallStack): | >> | >> error, called at compiler/utils/Binary.hs:192:16 in ghc:Binary | >> | >> Should I revert some hi-file compression patch? | > | > I currently have a local build running to confirm the issue. That | > being said, Harbormaster doesn't seem to be seeing this particular | > issue (although it fails for other reasons). | | Indeed I'm also seeing this. I will revert the compression patch. | | Cheers, | | - Ben