Bill Allombert on Thu, 13 Apr 2017 19:46:26 +0200


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Re: ( Possibly... ) Bug report.


On Thu, Apr 13, 2017 at 01:00:01PM -0400, R J Cano wrote:
> Dear PARI-Dev team, and PARI-Users mail list members.
> 
> Greetings!,
> 
> I am humbly following the request: "bug in PARI/GP (Segmentation
> Fault), please report."
> 
> Scenario: Source code compiled (including -g option!) and run with
> GP2C (from an invocation to gp2c-run )
> 
A217626_vec(n,{B=10})={my(u=n!-1);my(x=numtoperm(n,0),y,z=vector(u),i);for(j=1,u,y=numtoperm(n,j)-x;z[i++]=fromdigits(vector(#x-1,k,vecsum(y[1..k]) ) ,B);x+=y);z}

Hello Remy, it is a bug in the implementation of the -g option of gp2c.
But you can avoid the issue and improve your code by replacing
my(x=...,i);
by
my(x=...,i:small=0)

Cheers,
Bill.