<div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">This problem exist in the trunk</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">
<br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">You can use original code </div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">
<br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">//Line 42</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">
<div>CERES_HASH_NAMESPACE_START</div><div><br></div><div>// Allow us to hash pointers as if they were int&#39;s</div><div>template&lt;&gt; struct hash&lt; ::ceres::internal::ParameterBlock*&gt; {</div><div>  size_t operator()(::ceres::internal::ParameterBlock* x) const {</div>
<div>    return reinterpret_cast&lt;size_t&gt;(x);</div><div>  }</div><div>};</div><div><br></div><div>CERES_HASH_NAMESPACE_END</div></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">
////////////////////////////////////////////////////////////////////////////////////////</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">
<br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)"><b>//if not working try this</b></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">
<br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)"><div>//CERES_HASH_NAMESPACE_START</div><div>namespace std {</div><div>// Allow us to hash pointers as if they were int&#39;s</div>
<div>template&lt;&gt; struct hash&lt; ::ceres::internal::ParameterBlock*&gt; {</div><div>  size_t operator()(::ceres::internal::ParameterBlock* x) const {</div><div>    return reinterpret_cast&lt;size_t&gt;(x);</div><div>
  }</div><div>};</div><div>}</div><div>//CERES_HASH_NAMESPACE_END</div></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)"><br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">
<br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)"><br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">
<br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)">Att</div><span class="HOEnZb adL" style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.727272033691406px;background-color:rgb(255,255,255)"><font color="#888888">Alexander Pinzon Fernandez</font></span>