#4867: ghci displays negative floats incorrectly (was: Incorrect result from trig functions) -------------------------------+-------------------------------------------- Reporter: gwright | Owner: gwright Type: bug | Status: new Priority: high | Milestone: 7.0.2 Component: GHCi | Version: 7.0.1 Keywords: | Testcase: Blockedby: | Difficulty: Os: MacOS X | Blocking: Architecture: x86_64 (amd64) | Failure: Incorrect result at runtime -------------------------------+--------------------------------------------
Comment(by gwright): I was half right: rather than being missing, another piece of the OS X 64 bit linker was just sketched in. This code incorrectly calculated some of the less common relocations. The fix was just to replace the erroneous code with a call to `relocateAddress`. Here's what happens now: {{{ gwright-macbook> inplace/bin/ghc-stage2 --interactive GHCi, version 7.0.1.20101221: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading package ffi-1.0 ... linking ... done. Prelude> -1.0 --1.0 Prelude> }}} I don't yet understand the double minus sign in the result. It's probably caused by the messing about I did with `Float.lhs` when trying to track down the bug. I hope there isn't another real bug here, but you never know. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4867#comment:25> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler _______________________________________________ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs