ghc told me to report it. after I change 'Show' in deriving to 'show'
[1 of 1] Compiling Main ( /home/oz/aaa/engine.hs, interpreted ) ghc: panic! (the 'impossible' happened)
(GHC version 7.4.1 for i386-unknown-linux):
nameModule show{tv aVi}
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Trac metadata
Trac field | Value |
---|---|
Version | 7.4.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
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Blocking | |
CC | |
Operating system | |
Architecture |