std::vector<double> destruction throws sigabrt

I have a std::vector<double> In which GDB shows it containing these values:

Wph <5 items>            vector<double>
    [0] 10.750281685547618      double
    [1] 0.0053087812248281997   double
    [2] 4.2807534148705719e-08  double
    [3] 5.7427427663508097e-07  double
    [4] 0                       double

Upon automatic destruction when the function is exiting, it throws a SIGABRT.

0   raise   raise.c 64  0x7fffeec5ad05  
1   abort   abort.c 92  0x7fffeec5eab6  
2   __libc_message  libc_fatal.c    189 0x7fffeec93d7b  
3   malloc_printerr malloc.c    6283    0x7fffeec9fa8f  
4   _int_free   malloc.c    4795    0x7fffeec9fa8f  
5   __libc_free malloc.c    3738    0x7fffeeca38e3  
6   __gnu_cxx::new_allocator<double>::deallocate    new_allocator.h 95  0x457828    
7   std::_Vector_base<double, std::allocator<double> >::_M_deallocate   stl_vector.h    146 0x45567e    
8   std::_Vector_base<double, std::allocator<double> >::~_Vector_base   stl_vector.h    132 0x4542b3    
9   std::vector<double, std::allocator<double> >::~vector   stl_vector.h    314 0x453a96

What's going on?

  int data = 0;
  vector<double> Wph;
  Wph.resize(mydata.data.size());

  for (size_t t = 0; t < mydata.t.size(); t++)
  {
    double t0 = (PI / 180.0) * mydata.t[i];

    for (size_t p = 0; p < mydata.p.size(); p++)
    {

      double _Wph = 5; //arbitrary math
      Wph[data] = _Wph;

      data++;
    }
  }

struct mydata
{
  vector<double> t, p;
  vector<point> data;
};