ghc/tests/typecheck/should_fail/tcfail040.stderr

   1
   2 tcfail040.hs:19:
   3     Ambiguous type variable(s)
   4     `aMu'
   5         in the constraint `ORD aMu'
   6         arising from use of `<<' at tcfail040.hs:19
   7
   8
   9 Compilation had errors