panic:Unify.unifyTauTyLists
The attached sample program triggers a panic because I forgot to
pass the type argument in the recursive algebraic datatype
construction. The commented line is correct.
GHC should not panic but instead provide a helpful error message.
(Unluckily, I won't be able to test this with -HEAD atm)
Compiling Main ( bugs.hs, interpreted )
ghc-6.4: panic! (the `impossible' happened, GHC version 6.4):
Unify.unifyTauTyLists: mismatched type lists!
Trac metadata
Trac field |
Value |
Version |
6.4 |
Type |
Bug |
TypeOfFailure |
OtherFailure |
Priority |
normal |
Resolution |
ResolvedDuplicate |
Component |
Compiler (Type checker) |
Test case |
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Differential revisions |
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BlockedBy |
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Related |
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Blocking |
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CC |
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Operating system |
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Architecture |
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