tcfail016.hs:9: Couldn't match the type
- `PrelTup.(,) taRi' against `Expr'
- Expected: `Expr taRd'
- Inferred: `AnnExpr taRi'
- In the first argument of `g', namely `e1'
- In the first argument of `PrelBase.++', namely `(g e1)'
+ `Expr' against `PrelTup.(,) taRx'
+ Expected: `AnnExpr taRx'
+ Inferred: `Expr taRx'
In an equation for function `g':
`g (App e1 e2) = (g e1) PrelBase.++ (g e2)'