Want to crash PFGW?

[carpetpool]

I've noticed an issue with PFGW's ABC and ABC2 files which will cause pfgw 3.8.1 to crash. For some reason, the expression (b^n-1)/(b-1) (with a fixed value of n) will cause pfgw to stop working if evaluated in a ABC or ABC2 sieve file. Thanks to anyone who has pfgw 3.8.1 and is willing to try this.

input.txt:

---------
ABC2 ($a^73-1)/($a-1)
a: from 1 to 10
---------

or an ABC file:

---------
ABC ($a^73-1)/($a-1)
1
2
3
4
5
6
7
8
9
10
---------

Note: (You may replace the 73 with any exponent, just using it as an example.)

and run with

pfgw64.exe input.txt

and pfgw 3.8.1 will stop working.

[Batalov]

Dividing by zero is hard!

[carpetpool]

Originally Posted by Batalov

Dividing by zero is hard!

Good point. I didn't see that there.