#1843: ghc 6.8.1 broken on Mac OS X Leopard PPC
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Reporter: guest | Owner:
Type: bug | Status: new
Priority: high | Milestone: 6.8.2
Component: Compiler | Version: 6.8.1
Severity: critical | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: powerpc
Os: MacOS X |
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Comment (by mokus):
Replying to [comment:9 mokus]:
> I have no hypothesis regarding the segfault issue, but I can confirm
that when building either 6.8.1 or head, my stage1 builds pretend to work,
but my stage2 compilers are deader than doornails. Anything I can do to
provide more useful info?
>
As I typed this, I realized I hadn't actually tested the stage1 ghc-
inplace to confirm that it regularly produces vegetables. I have now done
so. Simple 'hello world'-type stuff works, but just about nothing else
does. Here's a pretty simple program that segfaults when run after being
compiled by stage1/ghc-inplace:
{{{
{-
- "primes.hs"
-}
module Main where
import System
primes = 2 : 3: 5 : (filter isPrime [7,9..])
-- x %= y: "x divides y"
x %= y = (y `rem` x) == 0
isPrime x
| x <= 1 = False
| isComposite x = False
| otherwise = True
isComposite x = any (%= x) (takeWhile (\p -> p^2 <= x) primes)
main = do
args <- getArgs
let n = read (args !! 0)
print (primes !! (n - 1))
}}}
Some interesting facts: "otool -r" knows of no relocations in the
compiled file. There are 14 listed in the working version compiled with
ghc-6.6.1. When I compiled with ghc-inplace, there were 8 of the infamous
"unknown scattered relocation type 4" messages.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1843#comment:10>
GHC <http://www.haskell.org/ghc/>
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