Repository : ssh://darcs.haskell.org//srv/darcs/testsuite On branch : ghc-7.6
http://hackage.haskell.org/trac/ghc/changeset/90f5c1531ad303f3838b1dd7aa6b8b6e627879de >--------------------------------------------------------------- commit 90f5c1531ad303f3838b1dd7aa6b8b6e627879de Author: Simon Peyton Jones <[email protected]> Date: Wed Aug 22 17:59:37 2012 +0100 Accept output >--------------------------------------------------------------- tests/deriving/should_fail/T3621.stderr | 16 ++++++---------- 1 files changed, 6 insertions(+), 10 deletions(-) diff --git a/tests/deriving/should_fail/T3621.stderr b/tests/deriving/should_fail/T3621.stderr index dc9dc84..68213c6 100644 --- a/tests/deriving/should_fail/T3621.stderr +++ b/tests/deriving/should_fail/T3621.stderr @@ -1,13 +1,9 @@ T3621.hs:21:21: - Couldn't match type `s' with `state' - `s' is an unknown type variable - `state' is an unknown type variable - When using functional dependencies to combine - MonadState s (State s), - arising from the dependency `m -> s' - in the instance declaration at T3621.hs:18:10 - MonadState state (State s), - arising from the 'deriving' clause of a data type declaration - at T3621.hs:21:21-36 + No instance for (MonadState state (State s)) + arising from the 'deriving' clause of a data type declaration + Possible fix: + add an instance declaration for (MonadState state (State s)) + or use a standalone 'deriving instance' declaration, + so you can specify the instance context yourself When deriving the instance for (MonadState state (WrappedState s)) _______________________________________________ Cvs-ghc mailing list [email protected] http://www.haskell.org/mailman/listinfo/cvs-ghc
