ghc/tests/typecheck/should_fail/tcfail056.stderr

   1
   2 tcfail056.hs:1:
   3     Duplicate or overlapping instance declarations
   4         for `Eq Foo' at tcfail056.hs:6 and tcfail056.hs:10
   5
   6 tcfail056.hs:10: Class `Eq' does not have a method `<='
   7
   8
   9
  10 Compilation had errors
  11