#9753: Segmentation fault when applying ** to a complex number ----------------------------------------+--------------------------- Reporter: AlexeiKopylov | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.6.3 Resolution: | Keywords: Operating System: MacOS X | Architecture: ia64 Type of failure: GHCi crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | ----------------------------------------+--------------------------- Old description:
Rising a negative complex number to a power using {{{**}}} in ghci causes a segmentation fault: {{{ $ ghci GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :m +Data.Complex Prelude Data.Complex> (-1) ** 1 :: Complex Double Segmentation fault }}}
New description: Rising a negative complex number to a power using {{{**}}} in ghci causes a segmentation fault: {{{ $ ghci GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :m +Data.Complex Prelude Data.Complex> (-1) ** 1 :: Complex Double Segmentation fault }}} -- Comment (by thomie): I can not reproduce this problem on Linux, neither with 7.6.3, nor with 7.8.3: {{{ $ ghci GHCi, version 7.8.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :m +Data.Complex Prelude Data.Complex> (-1) ** 1 :: Complex Double (-1.0) :+ (-1.2246467991473532e-16) }}} Can you try with GHC 7.8.3? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9753#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler