[MacPorts] #25265: ghc 6.10.4 seg fault in ghci when showing negative float

[MacPorts]

#25265: ghc 6.10.4 seg fault in ghci when showing negative float
----------------------------+-----------------------------------------------
 Reporter:  ben@…           |       Owner:  gwright@…           
     Type:  defect          |      Status:  new                 
 Priority:  Normal          |   Milestone:                      
Component:  ports           |     Version:  1.9.0               
 Keywords:                  |        Port:  ghc                 
----------------------------+-----------------------------------------------
Changes (by macsforever2000@…):

  * owner:  macports-tickets@… => gwright@…


Old description:

> On Snow Leopard, 64-bit, ghci will seg fault when attempting to show a
> negative float.
>
> Example:
>
> $ ghci
> GHCi, version 6.10.4: http://www.haskell.org/ghc/  :? for help
> Loading package ghc-prim ... linking ... done.
> Loading package integer ... linking ... done.
> Loading package base ... linking ... done.
> Prelude> 0.5
> 0.5
> Prelude> -0.5
> -Segmentation fault
>
> The seg fault does happen after the sign is displayed.
>
> A file compiled by ghc does not display the same behavior. Given a file
> test.hs:
>
> main = putStr $ show (-0.5)
>
> And compiling with ghc --make test, the result will run normally.
>
> Possibly related to tickets #24670, #24571.

New description:

 On Snow Leopard, 64-bit, ghci will seg fault when attempting to show a
 negative float.

 Example:

 {{{
 $ ghci
 GHCi, version 6.10.4: http://www.haskell.org/ghc/  :? for help
 Loading package ghc-prim ... linking ... done.
 Loading package integer ... linking ... done.
 Loading package base ... linking ... done.
 Prelude> 0.5
 0.5
 Prelude> -0.5
 -Segmentation fault
 }}}

 The seg fault does happen after the sign is displayed.

 A file compiled by ghc does not display the same behavior. Given a file
 test.hs:

 {{{
 main = putStr $ show (-0.5)
 }}}

 And compiling with ghc --make test, the result will run normally.

 Possibly related to tickets #24670, #24571.

--

-- 
Ticket URL: <http://trac.macports.org/ticket/25265#comment:1>
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