Problem building on sparc/Linux

[Simon Marlow]

Ian Lynagh wrote:
> On Wed, Mar 01, 2006 at 12:24:17PM +0000, Simon Marlow wrote:
> 
>>There's a ticket open on this one:
>>
>>  http://cvs.haskell.org/trac/ghc/ticket/470
>>
>>The ticket does give more info (isSpace isn't working correctly).  If 
>>you could track this down further, that would be great.
> 
> 
> Looks like a (fixed) gcc bug:
> 
> igloo at vore:/scratch/igloo/space$ rm *.o *.hi foo; ghc -Wall -O foo.hs -o foo && ./foo
> [True,False,True,True,False,True]
> igloo at vore:/scratch/igloo/space$ rm *.o *.hi foo; ghc -Wall -O foo.hs -o foo -pgmc /usr/bin/gcc-4.0 && ./foo
> [True,True,True,True,True,True]
> igloo at vore:/scratch/igloo/space$ gcc --version
> gcc (GCC) 3.3.6 (Debian 1:3.3.6-12)
> Copyright (C) 2003 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> 
> igloo at vore:/scratch/igloo/space$ /usr/bin/gcc-4.0 --version
> gcc-4.0 (GCC) 4.0.3 20060212 (prerelease) (Debian 4.0.2-9)
> Copyright (C) 2006 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

It could be a gcc bug, or it could be that GHC is relying on undefined C 
semantics.  If you feel inclined, I'd be really interested to know which 
code fragment is responsible (you'd need to replace fragments of the .s 
file in a binary search to find the right spot).  If you can't be 
bothered, that's fine too :-)  I'll close the bug.

Cheers,
	Simon