#10615: Panic; no skolem info (partial type signatures) -------------------------------------+------------------------------------- Reporter: holzensp | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"28096b274a3803b8a479c5dd94ebda655a15566c/ghc" 28096b2/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="28096b274a3803b8a479c5dd94ebda655a15566c" Fix quantification for inference with sigs When we are *inferring* the type of a let-bound function, we might still have a type signature. And we must be sure to quantify over its type variables, else you get the crash in Trac #10615. See Note [Which type variables to quantify] in TcSimplify }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10615#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler