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Panic on malformed newtype
The following causes a panic on GHC 9.6.1: ```haskell data A = A !B newtype B = B C C data C = C A ``` Result: ```text <no location info>: error: panic! (the 'impossible' happened) GHC version 9.6.1: mkNewTyConRhs B [C, C] Call stack: CallStack (from HasCallStack): callStackDoc, called at compiler/GHC/Utils/Panic.hs:189:37 in ghc:GHC.Utils.Panic pprPanic, called at compiler/GHC/Tc/TyCl/Build.hs:70:27 in ghc:GHC.Tc.TyCl.Build CallStack (from HasCallStack): panic, called at compiler/GHC/Utils/Error.hs:454:29 in ghc:GHC.Utils.Error ``` GHC versions 9.4.5 and 9.2.5 do not panic and report the error correctly. I haven't tested other versions. This is similar to #15523.
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