Silly IO problem

[Simon Marlow]

On 03 November 2005 12:57, skaller wrote:

> On Thu, 2005-11-03 at 09:49 +0100, Mirko Rahn wrote:
>>> It prints n, rather than tak(3n,2n,n).
>> 
>> ??? No:
>> 
>> *Main> :set args 0
>> *Main> main
>> 0.0
>> *Main> :set args 1
>> *Main> main
>> 2.0
>> *Main> :set args 2
>> *Main> main
>> 3.0
>> *Main> :set args 3
>> *Main> main
>> 6.0
>> 
>> The same with some versions of ghc.
> 
> Ah .. it seems to be a bug in gcc 4.0
> 
> The Glorious Glasgow Haskell Compilation System, version 6.4
> [running on Ubuntu which uses Debian package]
> 
> gcc (GCC) 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu9)
> x86_64
> 
> Summary: gcc does not work with GHC 6.4 on x86_64 with
> optimisation higher than -O1
> 
> Perhaps the Evil Mangler is not working, or, possibly
> the version isn't even registered.

Thanks for the report, I'll look into gcc 4.x before we release 6.4.2.

Cheers,
	Simon