Re: segfault

["Thomas D. Dean" <tomdean@wavecable.com>]

On 10/25/23 14:23, Bill Allombert wrote:
> On Tue, Oct 24, 2023 at 04:31:33PM -0700, Thomas D. Dean wrote:
> > On 10/24/23 16:26, Thomas D. Dean wrote:
> > > Ubuntu 22.04
> > > 64G RAM
> > >
> > >   > gp
> > > Reading GPRC: /home/tomdean/.gprc
> > > GPRC Done.
> > >
> > >           GP/PARI CALCULATOR Version 2.16.1 (development 28775-3c253ce7d5)
> > >             amd64 running linux (x86-64/GMP-6.2.1 kernel) 64-bit version
> > >       compiled: Oct 24 2023, gcc version 11.4.0 (Ubuntu
> > > 11.4.0-1ubuntu1~22.04)
> > >                               threading engine: single
> > >                    (readline v8.1 enabled, extended help enabled)
> > >
> > >                        Copyright (C) 2000-2023 The PARI Group
> > >
> > > PARI/GP is free software, covered by the GNU General Public License, and
> > > comes
> > > WITHOUT ANY WARRANTY WHATSOEVER.
> > >
> > > Type ? for help, \q to quit.
> > > Type ?18 for how to get moral (and possibly technical) support.
> > >
> > > parisizemax = 16000000000, primelimit = 10000000
> > > ? quadhilbert(-3299)
> > >     *** quadhilbert: Warning: increasing stack size to 16000000000.
> > >     ***   at top-level: quadhilbert(-3299)
> > >     ***                 ^------------------
> > >     *** quadhilbert: bug in PARI/GP (Segmentation Fault), please report.
> > >     ***   Break loop: type 'break' to go back to GP prompt
>
> This is very strange, I cannot reproduce this.
>
> Cheers,
> Bill.

I normally start gp in an xterm via an alias. My git code is in ./pari

> cp -R ./pari reproduce-error
> cd reproduce-error
> make clean
> ./Configure --with-readline --with-gmp
...
> make -j128 all
...
> sudo make install
> alias gp
alias gp='/usr/bin/xterm -T Pari -j -sk -sl 1000 -bc -bg white -fg black 
-geometry 80x52 -fa Courier -fs 12 -e /usr/local/bin/gp &'

In a dozen, or so, tries, this failed the first time and worked OK the 
rest. I started gp via the alias, then with /usr/local/bin/gp, then via 
the alias for the remaining tries.

If I start gp with
> /usr/local/bin/gp
It does not fail.

Maybe I have some library that is strange? Or maybe something was hung 
in a Linux buffer????

Let's just ignore this, for now. I will post again if I reproduce it.

Tom Dean