Bump `base` version to 4.9.0.0 (closes #11026)
[ghc.git] / testsuite / tests / typecheck / should_fail / tcfail150.hs
1 module ShouldFail where
2
3 -- !!! constraining the type variable in a class head is illegal
4 -- Simpler version of tcfail149
5 class Foo a where
6 op :: Eq a => a -> a