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GHC panic: No skolem info

I got this GHC output:

/home/sven/DEV_LBM/lbm-talk-flow/mediabus-fdk-aac/src/Data/MediaBus/Audio/FdkAac/Encoder.hs:124:8: error:ghc: panic! (the 'impossible' happened)
  (GHC version 8.0.2 for x86_64-unknown-linux):
	No skolem info: k_ataY[sk]

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

It happens when I omit a type signature.

We do not have the resources right now to create a minimal test case, but I didn't want to ignore the request to file a bug report.

This happens in a small project available on github, I commited the specific code and tagged the commit 'ghc-panic' and added a comment in the code.

I doubt that is makes sense to paste the code here, so if anyone looks into this, please grab the code from github at: https://github.com/lindenbaum/mediabus-fdk-aac/blob/ghc-panic/src/Data/MediaBus/Audio/FdkAac/Encoder.hs

Sorry if this bug report is not helpful.

Trac metadata
Trac field Value
Version 8.0.2
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture
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