Re: Lowering compiler optimisation with Apple gcc

["Justin C. Walker" <justin@mac.com>]

On Dec 15, 2006, at 12:11 , Bill Allombert wrote:

> Hello PARI-dev,
>
> we regurlarly get bug reports about random problems on Apple platform,
> see #504, #523,
> <http://pari.math.u-bordeaux.fr/archives/pari-dev-0603/msg00003.html>
> <http://pari.math.u-bordeaux.fr/archives/pari-dev-0606/msg00004.html>
> and others.
>
> Unfortunately we never have been able to reproduce any of them and
> they looks like compilers bugs in various Apple gcc build.

Recent versions of Pari and later versions of the compilers that come  
with Xcode seem to be fine.  I would be hesitant to change this,  
unless the problems resurface.

> Maybe we should lower the default optimisation level to reduce  
> breakage.
> Advanced users could still pick higher optimisation level.

Perhaps leave the default as it is, but make it simple to lower it?   
That may be the case now, but I don't know what the magic strings  
are.  :-}

Justin

--
They said it couldn't be done but sometimes it
doesn't work out that way.
  - Casey Stengel
--