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[1 of 3] Compiling SH_Overlap11_B ( SH_Overlap11_B.hs, SH_Overlap11_B.o )
[2 of 3] Compiling SH_Overlap11_A ( SH_Overlap11_A.hs, SH_Overlap11_A.o )
[3 of 3] Compiling SH_Overlap11 ( SH_Overlap11.hs, SH_Overlap11.o )
SH_Overlap11.hs:2:17: warning: [-Wunsafe]
‘SH_Overlap11’ has been inferred as unsafe!
Reason:
SH_Overlap11.hs:18:8: warning: [GHC-36705]
• 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_Overlap11_A.hs:12:3
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_Overlap11.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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