blob: 1d953195664abc8b0bcfea93668ba7a0363b6af5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
|
tcfail098.hs:12:10:
Could not deduce (Bar a0)
from the context: Bar a
bound by an instance declaration: Bar a => Bar Bool
at tcfail098.hs:12:10-26
The type variable ‘a0’ is ambiguous
In the ambiguity check for an instance declaration:
forall a. Bar a => Bar Bool
To defer the ambiguity check to use sites, enable AllowAmbiguousTypes
In the instance declaration for ‘Bar Bool’
|