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[1 of 3] Compiling SH_Overlap2_B ( SH_Overlap2_B.hs, SH_Overlap2_B.o )
[2 of 3] Compiling SH_Overlap2_A ( SH_Overlap2_A.hs, SH_Overlap2_A.o )
[3 of 3] Compiling SH_Overlap2 ( SH_Overlap2.hs, SH_Overlap2.o )
SH_Overlap2.hs:18:8: error:
Unsafe overlapping instances for C [Int] arising from a use of ‘f’
The matching instance is:
instance [overlap ok] [safe] C [Int]
-- Defined at SH_Overlap2_A.hs:11:3
It is compiled in a Safe module and as such can only
overlap instances from the same module, however it
overlaps the following instances from different modules:
instance C [a] -- Defined at SH_Overlap2.hs:14:3
In the expression: f ([1, 2, 3, 4] :: [Int])
In an equation for ‘test’: test = f ([1, 2, 3, 4] :: [Int])
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