#15081: Finite list becomes infinite after maping fractional function for high numbers -------------------------------------+------------------------------------- Reporter: Onsed | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.2.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 | (amd64) Type of failure: Incorrect result | Test Case: at runtime | libraries/base/tests/enumNumeric Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4650 Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): I know that this is probably going to be an unpopular point-of-view but I would argue that we should consider just dropping the `Enum` instance on floating point types. As was stated earlier, enumerating floating point numbers is inherently fragile. I'm sure removing the instance would break a non-trivial amount of code, but arguably that code is broken anyways. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15081#comment:15 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler