Commit 819fc1bf authored by Simon Marlow's avatar Simon Marlow
Browse files

add 6.8 output

parent 8b8ece11
Ambiguous constraint `X T c'
At least one of the forall'd type variables mentioned by the constraint
must be reachable from the type after the '=>'
In the instance declaration for `Show T'
No instance for (X T c)
arising from the 'deriving' clause of a data type declaration
at drvfail002.hs:18:0-25
Possible fix: add an instance declaration for (X T c)
When deriving the instance for (Show S)
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