blob: cfca878ed00d7331dba862f66f9d5e5d572fe172 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
|
tcfail157.hs:27:10:
Variable ‛b’ occurs more often than in the instance head
in the constraint: E m a b
(Use -XUndecidableInstances to permit this)
In the instance declaration for ‛Foo m (a -> ())’
tcfail157.hs:27:10:
Variable ‛b’ occurs more often than in the instance head
in the constraint: Foo m b
(Use -XUndecidableInstances to permit this)
In the instance declaration for ‛Foo m (a -> ())’
|