This code had been working earlier for my roscpp package. I integrated more code to this and have added a few C libraries but this code is a direct copy from the previous version. It fails everytime in {nh.subscribe}. I am using Ubuntu Linux 11.10 with ROS electric. I do not wish to move to a newer version of ROS at this juncture of development. I am getting a segmentation violation in the following code:

ros::init(argc, argv, "irobot_stargazer");
ros::NodeHandle nh; 
ros::Subscriber sub;
sub = nh.subscribe("/cu/stargazer_marker_cu", 1, get_stargazer_coord);
//sub2 = nh.subscribe("/destXYT", 10, get_destination);
if(!sub)
{// the subscribe did not work
    printf("could not subscribe to stargazer\n");
    exit(0);
}

the error shown in gdb says: 0x00123c3b in ?? () from /lib/ld-linux.so.2

Can someone please let me know if there is something I am missing or supposed to add.

Edit 1: I am putting the backtrace for the code: 0 0x00123c3b in ?? () from /lib/ld-linux.so.2

1 0x005573cf in XmlRpc::XmlRpcSocket::accept (fd=12) at /tmp/buildd/ros-electric-ros-comm-1.6.7/debian/ros-electric-ros-comm/opt/ros/electric/stacks/ros_comm/utilities/xmlrpcpp/src/XmlRpcSocket.cpp:165

2 0x00551719 in XmlRpc::XmlRpcServer::acceptConnection (this=0x80b1698) at /tmp/buildd/ros-electric-ros-comm-1.6.7/debian/ros-electric-ros-comm/opt/ros/electric/stacks/ros_comm/utilities/xmlrpcpp/src/XmlRpcServer.cpp:152

3 0x0055163f in XmlRpc::XmlRpcServer::handleEvent (this=0x80b1698) at /tmp/buildd/ros-electric-ros-comm-1.6.7/debian/ros-electric-ros-comm/opt/ros/electric/stacks/ros_comm/utilities/xmlrpcpp/src/XmlRpcServer.cpp:142

4 0x00551340 in XmlRpc::XmlRpcDispatch::work (this=0x80b16a4, timeout=0.10000000000000001) at /tmp/buildd/ros-electric-ros-comm-1.6.7/debian/ros-electric-ros-comm/opt/ros/electric/stacks/ros_comm/utilities/xmlrpcpp/src/XmlRpcDispatch.cpp:131

5 0x00552004 in XmlRpc::XmlRpcServer::work (this=0x80b1698, msTime=0.10000000000000001) at /tmp/buildd/ros-electric-ros-comm-1.6.7/debian/ros-electric-ros-comm/opt/ros/electric/stacks/ros_comm/utilities/xmlrpcpp/src/XmlRpcServer.cpp:132

6 0x001c6dbf in ros::XMLRPCManager::serverThreadFunc (this=0x80b1688) at /tmp/buildd/ros-electric-ros-comm-1.6.7/debian/ros-electric-ros-comm/opt/ros/electric/stacks/roscomm/clients/cpp/roscpp/src/libros/xmlrpcmanager.cpp:258

7 0x001c92bb in operator() (p=, this=0x80b45a4) ---Type to continue, or q to quit--- at /usr/include/boost/bind/memfntemplate.hpp:49

8 operator(), boost::_bi::list0> ( f=..., this=0x80b45ac, a=) at /usr/include/boost/bind/bind.hpp:253

9 operator() (this=0x80b45a4) at /usr/include/boost/bind/bind_template.hpp:20

10 boost::detail::threaddata<boost::bi::bindt<void, boost::mfi::mf0, boost::bi::list1<boost::bi::valueros::XMLRPCManager* > > >::run (this=0x80b44a0) at /usr/include/boost/thread/detail/thread.hpp:61

11 0x0059c3cc in threadproxy () from /usr/lib/libboostthread.so.1.46.1

12 0x003b3d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

13 0x0049a0ce in clone () from /lib/i386-linux-gnu/libc.so.6

Backtrace stopped: Not enough registers or memory available to unwind further

Here are the things that I have tried till now: 1. Initially created libraries by use of makefiles and called those makefiles through cmake. This produced a executeable linked to these libraries. 2. Tried creating a monolithic executeable with all the objet files wrapped into one. The final executeable generated fails at the same location, just before calling nh.subscribe().

The prototype for the function is void getstargazercoord(const stargazer_cu::Pose2DTagged::ConstPtr& data);