#15520: Invalid warning Defined but not used -------------------------------------+------------------------------------- Reporter: rik | Owner: (none) Type: bug | Status: infoneeded Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): Do you export `x`? I can get the warning you claim with this program, which does //not// export `x`, for instance: {{{#!hs {-# LANGUAGE OverloadedStrings #-} {-# OPTIONS -Wunused-top-binds #-} module Foo (U) where import Data.Text (Text) data U = Text :+++ Text x :: U x = "ss" :+++ "ss" }}} However, this is correct behavior, since `x` is not used anywhere (and therefore `:+++` is transitively not used), so I'm still not sure what the bug is. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15520#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler