Segmentation violation in nodeHandle.subscribe [closed]

asked 2012-12-13 18:56:20 -0600

swingingiant gravatar image

updated 2012-12-15 23:39:14 -0600

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/ros_comm/clients/cpp/roscpp/src/libros/xmlrpc_manager.cpp:258

7 0x001c92bb in operator() (p=<optimized out="">, this=0x80b45a4) ---Type <return> to continue, or q <return> to quit--- at /usr/include/boost/bind/mem_fn_template.hpp:49

8 operator()<boost::_mfi::mf0<void, ros::xmlrpcmanager="">, boost::_bi::list0> ( f=..., this=0x80b45ac, a=<optimized out="">) at /usr/include/boost/bind/bind.hpp:253

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

10 boost::detail::thread_data<boost::_bi::bind_t<void, boost::_mfi::mf0<void,="" ros::xmlrpcmanager="">, boost::_bi::list1<boost::_bi::value<ros::xmlrpcmanager*> > > >::run (this=0x80b44a0) at /usr/include/boost/thread/detail/thread.hpp:61

11 0x0059c3cc in thread_proxy () from /usr/lib/libboost_thread.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 ... (more)

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Closed for the following reason question is not relevant or outdated by tfoote
close date 2015-09-18 19:03:31.321908

Comments

Looks OK to me. Try to compile it as a single program without other libraries, then you know it is not this code which is the problem.

dornhege gravatar imagedornhege ( 2012-12-13 21:14:52 -0600 )edit

And please provide a more complete backtrace and maybe the definition of get_stargazer_coord.

Lorenz gravatar imageLorenz ( 2012-12-13 23:00:39 -0600 )edit

I have ported the code to fuerte too but the same problem is cropping up.

swingingiant gravatar imageswingingiant ( 2012-12-15 18:13:50 -0600 )edit

I tested extensively with lots of different approaches and have narrowed down to the problem coming from ros::spinOnce(). I am guessing the error occurs every time I create the nodehandle and add a subscriber there is a call to ros::spinOnce implicitly which creates the problem.

swingingiant gravatar imageswingingiant ( 2012-12-16 14:58:08 -0600 )edit

can anyone please provide a solution to this open problem as I am unable to make a headway in this. I hope the ROS team can provide some inputs on this problem.

swingingiant gravatar imageswingingiant ( 2013-01-14 23:50:50 -0600 )edit

Currently it is not possible to provide a solution because the problem cannot be reproduced. The code you posted should work in principle, but is incomplete. Please provide a minimal complete example given the missing definitions.

dornhege gravatar imagedornhege ( 2013-01-15 00:51:59 -0600 )edit