On 04/08/2018 06:15 PM, popgen wrote:
I am trying to implement some code to calculate Stirling numbers. The
code shown below provides the correct calculation but throws a
Segmentation fault: 11 once it is done running. I suspect there is
something with the way I am setting up the multidimensional array.
[...]
int stirling1(int n, int k)
{
auto matrix = new int[][](n+1,k+1) ;
[...]
for(int i = 1; i <= n ; i++)
{
for(int q = 1; q <= i ; q++)
Should it be `q <= k` here? You're using q as an index into an array of
length k + 1. If you go up to i, you'll exceed that and go out of bounds.
That you're seeing a segfault instead of a range error indicates that
you're compiling with -release. Better not do that when debugging.
