<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><pre style="color: rgb(0, 0, 0); font-family: arial; font-size: 14px; line-height: 23.32400131225586px;">&gt;&gt; &gt;Hi,
&gt;&gt;
&gt;&gt; &gt;Fractal wrote:
&gt;&gt; &gt;&gt; Hi all
&gt;&gt; &gt;&gt;     rtree is a great library?I used it in my project, everything is ok except random crash after I updated program bin file.
&gt;&gt; &gt;&gt;     i dig into the source code of rtree,found the crash was caused by using virtual function at node class. I also found that there is a static version of node class. is this a to be implement feature, or I'm using rtree in the wrong way?
&gt;&gt; here is the minimal example which exhibit the problem, you run the program the first time, is ok, but the second time, it crashed in insert method,
&gt;&gt;   i'm using vs2012, and the os is win7, in linux version, i observed that only i recompile my program and restart it, will it crash.

&gt;Yes, indeed the polymorphic nodes are the cause of this crash. So from 
&gt;now on Boost.Variant-based nodes are used by default in the rtree: 
&gt;https://github.com/boostorg/geometry/commit/3474244d0a91d63752cd8a7b683fd013da030750
&gt;The side effects (according to the 
&gt;index/example/benchmark_experimental.cpp) are:
&gt;- slower inserts on MSVC
&gt;- faster inserts on GCC
&gt;- smaller memory consumption
&gt;I plan to rewrite and optimize the nodes dispatching in the future when 
&gt;I have more free time, for now the above should do the job.

&gt;If you can use the development branch of the library, just get the 
&gt;latest version of Boost or Boost.Geometry from GitHub.

&gt;If you need a workaround for a previously released version of Boost you 
&gt;may do exactly the same changes I've made directly in the library or 
&gt;write something like this:

&gt;#include &lt;boost/geometry.hpp&gt;
&gt;#include &lt;boost/geometry/index/rtree.hpp&gt;

&gt;struct my_linear_tag {};

&gt;namespace boost { namespace geometry { namespace index { namespace 
&gt;detail { namespace rtree {

&gt;template &lt;&gt;
&gt;struct options_type&lt;my_linear_tag&gt;
&gt;{
&gt;     typedef options&lt;
&gt;         index::linear&lt;32, 8&gt;,
&gt;         insert_default_tag,
&gt;         choose_by_content_diff_tag,
&gt;         split_default_tag,
&gt;         linear_tag,
&gt;         node_s_mem_static_tag
&gt;     &gt; type;
&gt;};

&gt;}}}}}// namespace boost::geometry::index::detail::rtree

&gt;// ...

&gt;typedef bgi::rtree&lt;rtree_value_type, my_linear_tag, indexable_t, 
&gt;equal_to_t, rtree_allocator_t&gt; rtree_t;

&gt;Let me know if one of the solutions works for you.
</pre><pre style="color: rgb(0, 0, 0); font-family: arial; font-size: 14px; line-height: 23.32400131225586px;">that's great! Adam, i tried all the solutions you mentioned above,&nbsp;</pre><pre style="color: rgb(0, 0, 0); font-family: arial; font-size: 14px; line-height: 23.32400131225586px;">the my_linear_tag method failed to compile the insert method,</pre><pre style="color: rgb(0, 0, 0); font-family: arial; font-size: 14px; line-height: 23.32400131225586px;"> compiler complains:</pre><pre><span style="line-height: 23.32400131225586px;">D:\boost\boost_1_54_0\boost/geometry/index/rtree.hpp(1048): error C2664: ��boost::geometry::index::detail::rtree::visitors::insert&lt;Element,Value,Options,Translator,Box,Allocators,InsertTag&gt;::insert(boost::interprocess::offset_ptr&lt;PointedType,DifferenceType,OffsetType,OffsetAlignment&gt; &amp;,size_t &amp;,const Value &amp;,const boost::geometry::index::linear&lt;MaxElements,MinElements&gt; &amp;,const Translator &amp;,Allocators &amp;,size_t)��: cannot convert parameter 5  from ��params_t�� to ��const boost::geometry::index::linear&lt;MaxElements,MinElements&gt; &amp;��</span></pre><pre><span style="line-height: 23.32400131225586px;">then i modified the&nbsp;boost/geometry/index/detail/rtree/options.hpp according to github, and it worked perfectly!</span></pre><pre><span style="line-height: 23.32400131225586px;">thanks Adam.</span></pre><div style="color: rgb(0, 0, 0); font-family: arial; font-size: 14px; line-height: 1.7;"><br></div></div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>