#13473: Variables in patterns made with QuasiQuotes sometimes don't get bound -------------------------------------+------------------------------------- Reporter: harpocrates | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2 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 harpocrates): Actually, it looks like this is equivalent to a more general TH issue (with a smaller minimal example). The following compiles in 7.10.3 but not 8.0.2 {{{ {-# LANGUAGE TemplateHaskell #-} module Main where import Language.Haskell.TH main = let $(varP $ mkName "x") = 1 in print x }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13473#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler