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POsegmentation-fault with boost::polygon
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  1. POsegmentation-fault with boost::polygon
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    copied!<p>I have got polygon-data which I processed. Now I want to see how well my processed data fits my original data. For this task I want to use BOOST's polygon set-operators. The following code gives me a segfault though:</p> <pre><code>#include &lt;iostream&gt; #include &lt;boost/polygon/polygon.hpp&gt; using namespace boost::polygon::operators; using namespace std; typedef boost::polygon::polygon_data&lt;double&gt; BPolygon; typedef boost::polygon::polygon_traits&lt;BPolygon&gt;::point_type BPoint; typedef boost::polygon::polygon_set_data&lt;double&gt; BPolygonSet; typedef std::vector&lt;BPolygon&gt; BPolygonVec; double meassureError(BPolygonVec &amp;polys1, BPolygonVec &amp;polys2) { BPolygonSet set1; BPolygonSet set2; assign(set1, polys1); assign(set2, polys2); return area(set1 ^ set2); } int main(int argc, char *argv[]) { BPolygonVec polys1; BPolygonVec polys2; loadPolysFromFile(polys1); loadPolysFromFile(polys2); cout &lt;&lt; meassureError(polys1, polys2) &lt;&lt; endl; return 0; } </code></pre> <p>gdb-output:</p> <pre><code>Program received signal SIGSEGV, Segmentation fault. 0x08156ce7 in std::list&lt;boost::polygon::point_data&lt;double&gt;, std::allocator&lt;boost::polygon::point_data&lt;double&gt; &gt; &gt;::begin (this=0x0) at /usr/include/c++/4.8.2/bits/stl_list.h:759 759 { return iterator(this-&gt;_M_impl._M_node._M_next); } </code></pre> <p>My data consists of about 2000 polygons with roughly 10 vertices each and I would expect to have enough memory in order to process that. What am I doing wrong? Thanks for your help!</p>
 

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