Cannot access memory at address error
<p>I'm getting this error:</p>

<pre><code>Program received signal SIGSEGV, Segmentation fault.
0x0000000000407265 in Quadtree::deeper (this=0x7fffffffe430, 
    orig=@0x7fffffffe430, n=@0x7a1da0, tol=Cannot access memory at address 0x7fffff3feffc
) at quadtree.cpp:47
47      int Quadtree::deeper(QuadtreeNode * &amp; orig, QuadtreeNode * &amp; n, int tol, int tolNum) {
</code></pre>

<p>This is line 47:</p>

<pre><code>int Quadtree::deeper(QuadtreeNode * &amp; orig, QuadtreeNode * &amp; n, int tol, int tolNum) {
</code></pre>

<p>Whats weird is that I am not getting any valgrind errors at all, but only gdb error and seg fault at run time. What can this error possibly mean in a general sense (without having to see the rest of my code)?</p>
