#15334: (forall x. c x, forall x. d x) is not equivalent to forall x. (c x, d x) -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: merge Priority: normal | Milestone: 8.6.1 Component: Compiler (Type | Version: 8.5 checker) | Keywords: Resolution: | QuantifiedConstraints Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: GHC rejects | Test Case: quantified- valid program | constraints/T15334 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): Ryan, how important is this to you? While it is possible to backport this to 8.6, I suspect it will be quite a bit of work. The commit in comment:10 appears to depend quite heavily on 45f44e2c9d5db2f25c52abb402f197c20579400f which is a 1 kLoC refactoring which seems to have a slew of dependencies of its own. Unless this is breaking code in the wild I think it would be best to punt this to 8.8. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15334#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler