Re: Some bugs?

["Jason Moxham" <jason@njkfrudils.plus.com>]

----- Original Message ----- 
From: "Bill Allombert" <Bill.Allombert@math.u-bordeaux1.fr>
To: <pari-dev@list.cr.yp.to>
Sent: Saturday, July 04, 2009 1:19 PM
Subject: Re: Some bugs?


> On Sat, Jul 04, 2009 at 12:24:00PM +0100, Jason Moxham wrote:
> > On Thursday 02 July 2009 23:11:31 Jason Moxham wrote:
> > I manage to get rid of a few more bugs, and I'm left with these
> >
> > polred,rnf,rnfkummer all have this error
> >
> > x^7 + Mod(7*y - 7, y^2 - y - 1)*x^6 + Mod(-21*y + 28, y^2 - y - 1)*x^5 - 
> > 35*
> > x^4 + Mod(35*y - 49, y^2 - y - 1)*x^3 + Mod(-7*y + 84, y^2 - y - 1)*x^2 + 
> > Mo
> > d(-14*y + 21, y^2 - y - 1)*x + Mod(-y - 43, y^2 - y - 1)
> >   ***   at top-level: rnfpolredabs(nfinit(
> >   ***                 ^--------------------
> >   *** rnfpolredabs: could not open requested file ./MPQS.gpa/FREL.
>
> There might a problem with the way MPQS creates temporary files.
> Try factor(2^128+1)
> The code to create temporary files is in src/language/es.c.
> Maybe we use a wrong directory or a wrong filename.

Yes it is , mpqs assumes the function below creates the directory as well as 
testing existence

line 4175 in language/es.c
static int
pari_dir_exists(const char *s) { return 0; }

change to

static int
pari_dir_exists(const char *s) { return mkdir(s); }

So this is the same as the UNIX one but without the mode
So I suppose we will need this for MSVC and MinGW

this fixes polred,rnf,rnfkummer  tests for Win32 MSVC

Jason