#15125: Typeclass instance selection depends on the optimisation level -------------------------------------+------------------------------------- Reporter: nicuveo | Owner: (none) Type: bug | Status: closed Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.2.2 Resolution: duplicate | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #14434 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * status: new => closed * resolution: => duplicate * related: => #14434 Comment: Indeed, that is a separate bug, so I'd recommend opening a new ticket so that it does not get lost in here. Some advice for the future: * Make sure to post the complete code. The files in the original description leave off several details like the language extensions and module names. Without these, we have to reverse-engineer them, which is quite annoying. * Don't bother posting `stack.yaml` files or other extraneous things like that. An ideal reproducing test case is one where you can simply invoke GHC on some files to produce the issue. And you already have such a test case! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15125#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler