ghc/compiler/tests/typecheck/should_fail/tcfail020.stderr

   1
   2 tcfail020.hs:12: No instance for:
   3                      `A [a{-aGH-}]'
   4     tcfail020.hs:12:
   5         in an instance declaration
   6     When checking superclass constraints of an instance declaration
   7
   8
   9 Compilation had errors