#12212: GHC 8.0.1 crash -------------------------------------+------------------------------------- Reporter: dibblego | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Linux | Architecture: Type of failure: Compile-time | Unknown/Multiple crash | Test Case: Blocked By: | Blocking: Related Tickets: 9160, 10602 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"d09e982c534b20908064f36d701a1a3a6a2eb55a/ghc" d09e982c/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="d09e982c534b20908064f36d701a1a3a6a2eb55a" Don't quantify over Refl in a RULE This fixes Trac #12212. It's quite hard to provoke, but I've added a standalone test case that does so. The issue is explained in Note [Evidence foralls] in Specialise. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12212#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler