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ExpandSynsFail3.hs:21:8: error: [GHC-83865]
• Couldn't match type ‘Bool’ with ‘Int’
Expected: T (T3, T5, Int)
Actual: T (T5, T3, Bool)
Type synonyms expanded:
Expected type: T (T3, T3, Int)
Actual type: T (T3, T3, Bool)
• In the first argument of ‘f’, namely
‘(undefined :: T (T5, T3, Bool))’
In the expression: f (undefined :: T (T5, T3, Bool))
In an equation for ‘a’: a = f (undefined :: T (T5, T3, Bool))
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