#13429: Optimizer produces Core with an infinite <<loop>> -------------------------------------+------------------------------------- Reporter: lehins | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 7.10.4 Component: Compiler | Version: 8.0.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by lehins): For what it's worth, I figured out a reliable way to avoid the bug, namely adding an extra constraint `Array X e`. So changing the type signature of `correlate` to: `correlate :: (Array X e, Array cs e) => Image X e -> Image cs e -> Image cs e` can be used as a trick for working around the bug. Not sure if it is relevant, but maybe it will help in narrowing down a possible cause. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13429#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler