(gdb) c
Continuing.
[New Thread 0x7ffff1090700 (LWP 29091)]
[New Thread 0x7fffe999f700 (LWP 29092)]
[New Thread 0x7fffe919e700 (LWP 29093)]
[New Thread 0x7fffe2444700 (LWP 29094)]
  -> iteration 0... a
c
d
h

Program received signal SIGSEGV, Segmentation fault.
0x00007fffecf2ea7a in SWIG_Python_ConvertPtrAndOwn (obj=0x21a8890,
    ptr=0x7fffffffcd60, ty=0x7fffede42080 <_swigt__p_shogun__CDirectorKernel>,
    flags=0, own=0x0) at modshogun_wrap.cxx:2336
2336            swig_cast_info *tc = SWIG_TypeCheck(to->name,ty);