#8073: TransformListComp weird type error -------------------------------------+------------------------------------- Reporter: simonmar | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler (Type | Version: 7.6.3 checker) | Operating System: Unknown/Multiple Keywords: | Type of failure: GHC rejects Architecture: Unknown/Multiple | valid program Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- Am I missing something, or is this broken? {{{ Prelude> :set -XTransformListComp Prelude> import Data.List Prelude Data.List> [ x | x <- ['a'..'z'], then sort] <interactive>:5:29: No instance for (Ord a) arising from a use of `sort' Possible fix: add (Ord a) to the context of a type expected by the context: [a] -> [a] In the expression: sort In a stmt of a list comprehension: then sort In the expression: [x | x <- ['a' .. 'z'], then sort] }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8073 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler