#11386: Improve error message -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: task | Status: new Priority: high | Milestone: 8.0.1 Component: Compiler | Version: 8.0.1-rc1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: #10362 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): If you had written {{{ class T A b }}} Then the error would have been fine. What is special here? Just that it's using a type constructor that has built-in syntax. I expect I could add a special case to dis-allow such class declarations, and I agree this one is strange because of the `%` signs. But is it really worth the trouble? Will people do this much? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11386#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler