Type family bug ?

I get this error when compiling a program with associated type families:

$ ghc --make Queens_v2.hs 
[1 of 5] Compiling Domain           ( Domain.hs, Domain.o )
[2 of 5] Compiling Solver           ( Solver.hs, Solver.o )
[3 of 5] Compiling FD               ( FD.hs, FD.o )
[4 of 5] Compiling SearchTree       ( SearchTree.hs, SearchTree.o )
[5 of 5] Compiling Main             ( Queens_v2.hs, Queens_v2.o )
ghc: panic! (the 'impossible' happened)
  (GHC version 6.10.1 for i386-apple-darwin):
	idInfo co{v a629} [tv]

Tom Schrijvers

Trac metadata

Trac field	Value
Version	6.10.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler (Type checker)
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	MacOS X
Architecture