[protobuf] error in repeated_field.h:613

[BKonz]

Hello,
I have the following Message in my .proto file:

message Control2Arm{
 required int32 command = 1;
 repeated double pose = 2;
 repeated double spd = 3;
 repeated double acc = 4;
 repeated double jrk = 5;
}

In one class I do this:

Control2Arm c2a;
    c2a.set_command(1);

  //pack pose
  for (int i = 0; i < 3; i++) {
    for (int j = 0; i < 3; i++) {
      c2a.add_pose(pose(i, j));
    }
  }
  //pack spd
  for (int i = 0; i < 3; i++) {
    c2a.add_spd(spd[i]);
  }
  //pack acc
  for (int i = 0; i < 3; i++) {
    c2a.add_acc(acc[i]);
  }
  //pack jrk
  for (int i = 0; i < 3; i++) {
    c2a.add_jrk(jrk[i]);
  }
  std::string s;
  c2a.SerializeToString(&s);


later I parse it:
Control2Arm t;
 bool parsed = t.ParseFromArray(&_str[0], _str.size());

It works when I don't use repeated in the message and only send one value. 
With repeated I get:
[libprotobuf FATAL /usr/local/include/google/protobuf/repeated_field.h:613] 
CHECK failed: (index) < (size()): 

Is the error in the part I posted?

Thanks a lot.
B

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