#15772: Strange constraint error that disappears when adding another top-level declaration -------------------------------------+------------------------------------- Reporter: kosmikus | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.6.1 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): I think your hunch about `Note [FunEq occurs-check principle]` is right on the mark, since commit 1eec1f21268af907f59b5d5c071a9a25de7369c7 (`Another major constraint-solver refactoring`), which introduced that Note, is the first commit to demonstrate this bug. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15772#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler