Segmentation fault (core dumped) : PCL tutorial

edit

Hey, I am new to ROS (Version Jade-1.11.20) and want to work with pointclouds. I followed the first ROS PCL tutorial as written in http://wiki.ros.org/pcl/Tutorials . However, rosrun leads to the following error output:

rosrun my_pcl_tutorial example input:=/narrow_stereo_textured/points2
Segmentation fault (core dumped)

Normally, that would mean that pointers are screwed up, but as I simply copy-pasted the code from the tutorial, the following example.cpp file should be correct:

#include <ros/ros.h>
// PCL specific includes
#include <sensor_msgs/PointCloud2.h>
#include <pcl_conversions/pcl_conversions.h>
#include <pcl/point_cloud.h>
#include <pcl/point_types.h>
#include <pcl/filters/voxel_grid.h>

ros::Publisher pub;

void 
cloud_cb (const sensor_msgs::PointCloud2ConstPtr& cloud_msg)
{
  // Container for original & filtered data
  pcl::PCLPointCloud2* cloud = new pcl::PCLPointCloud2; 
  pcl::PCLPointCloud2ConstPtr cloudPtr(cloud);
  pcl::PCLPointCloud2 cloud_filtered;

  // Convert to PCL data type
  pcl_conversions::toPCL(*cloud_msg, *cloud);

  // Perform the actual filtering
  pcl::VoxelGrid<pcl::PCLPointCloud2> sor;
  sor.setInputCloud (cloudPtr);
  sor.setLeafSize (0.1, 0.1, 0.1);
  sor.filter (cloud_filtered);

  // Convert to ROS data type
  sensor_msgs::PointCloud2 output;
  pcl_conversions::fromPCL(cloud_filtered, output);

  // Publish the data
  pub.publish (output);
}

int
main (int argc, char** argv)
{
  // Initialize ROS
  ros::init (argc, argv, "my_pcl_tutorial");
  ros::NodeHandle nh;

  // Create a ROS subscriber for the input point cloud
  ros::Subscriber sub = nh.subscribe ("input", 1, cloud_cb);

  // Create a ROS publisher for the output point cloud
  pub = nh.advertise<sensor_msgs::PointCloud2> ("output", 1);

  // Spin
  ros::spin ();
}

Could it be that I need to manually download and put /narrow_stereo_textured/points2 in the same folder as example.cpp ? I assumed that it gets taken from the library, but maybe this assumption is wrong. If you need any further code or info, just tell me (you would have to give all instructions though). I also had a problem incorporating the package before as can be read in http://answers.ros.org/question/24426... .

GDB bt output:

        (gdb) bt
    #0  0x00007ffff402ea70 in boost::math::lanczos::lanczos_initializer<boost::math::lanczos::lanczos17m64, long double>::init::init() ()
       from /usr/lib/libpcl_sample_consensus.so.1.7
    #1  0x00007ffff40066be in ?? () from /usr/lib/libpcl_sample_consensus.so.1.7
    #2  0x00007ffff7dea10a in call_init (l=<optimized out>, argc=argc@entry=1, 
        argv=argv@entry=0x7fffffffd9c8, env=env@entry=0x7fffffffd9d8)
        at dl-init.c:78
    #3  0x00007ffff7dea1f3 in call_init (env=<optimized out>, 
        argv=<optimized out>, argc=<optimized out>, l=<optimized out>)
        at dl-init.c:36
    #4  _dl_init (main_map=0x7ffff7ffe1c8, argc=1, argv=0x7fffffffd9c8, 
        env=0x7fffffffd9d8) at dl-init.c:126
    #5  0x00007ffff7ddb30a in _dl_start_user () from /lib64/ld-linux-x86-64.so.2
    #6  0x0000000000000001 in ?? ()
    #7  0x00007fffffffddd1 in ?? ()
    #8  0x0000000000000000 in ?? ()
(gdb)