I wonder if you are compiling with 8.2.1? It's broken. You need 8.2.2
| -----Original Message-----
| From: ghc-devs On Behalf Of David Feuer
| Sent: 16 April 2018 18:22
| To: ghc-devs@haskell.org
| Subject: CI builds failing
|
| It looks like the recent differential builds are all failing like this:
|
| compiler/main/DynamicLoading.hs:79:19: warning: [-Wunused-matches]
| Defined but not used: ‘hsc_env’
| |
| 79 | initializePlugins hsc_env df
| | ^^^^^^^
| ghc: panic! (the 'impossible' happened)
| (GHC version 8.2.1 for x86_64-unknown-linux):
| runtimeRepPrimRep
| typePrimRep (r_apc3 :: TYPE rep_apc2)
| rep_apc2
| Call stack:
| CallStack (from HasCallStack):
| prettyCurrentCallStack, called at
| compiler/utils/Outputable.hs:1133:58 in ghc:Outputable
| callStackDoc, called at compiler/utils/Outputable.hs:1137:37 in
| ghc:Outputable
| pprPanic, called at compiler/simplStg/RepType.hs:360:5 in
| ghc:RepType
| Please report this as a GHC bug:
| https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.hask
| ell.org%2Fghc%2Freportabug&data=02%7C01%7Csimonpj%40microsoft.com%7C9cae
| ba32974343dc3b4008d5a3bea49b%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%
| 7C636594961595926044&sdata=%2Fnn6O17%2BCIhszUh1CtWoiNcrHvuFKEVoYS%2FyWn7
| JDtk%3D&reserved=0
| make[1]: *** [compiler/stage1/build/PrelRules.o] Error 1
| make[1]: *** Waiting for unfinished jobs....
| make: *** [all] Error 2
|
|
| Oddly, I don't see a commit to master failing like this. What's going
| on?
|
| David
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