stack smashing detected : terminated Aborted (core dumped) in c++

I was trying to stream process the command using popen.

avahi-browse -trp _timeserver._udp

The output the of the command looks as below.

avahi-browse -trp _timeserver._udp
+;enp0s3;IPv4;ubuntu2;_timeserver._udp;local
+;enp0s3;IPv4;ubuntu1;_timeserver._udp;local
=;enp0s3;IPv4;ubuntu2;_timeserver._udp;local;ubuntu2.local;192.168.1.7;123;"type=configured" "source=ntp"
=;enp0s3;IPv4;ubuntu1;_timeserver._udp;local;ubuntu1.local;192.168.1.105;123;"type=configured" "source=ntp"

The code I am trying to run is below

#include <iostream>
#include <regex>
#include <fstream>
#include <string>
#include <cstdlib>

using namespace std;

void getDNSSDServices(string aServiceType) {
    //#[ operation getDNSSDServices(String)
    string myCommand = "avahi-browse -trp _timeserver._udp";
    cout<<"My Command is :"<< myCommand << endl;
    FILE* myFile = popen(myCommand.c_str(), "r");   
    if(myFile == nullptr)
    {
        cout << "Failed to execute" << myCommand << endl;
    }
    else
    {   
    char myline[100];
        while(std::fgets(myline,200,myFile)){ //read data from file object and put it into string.
        std::string s = std::string(myline);
        std::cout << "myline1 is :"<< s << std::endl; //print the data of the string
        }   
    }
    ::pclose(myFile);
}
int main() {
    getDNSSDServices("_beatstime._udp");
    return 0;
}

I am facing the following issue.

My Command is :avahi-browse -rtp _timeserver._udp
myline1 is :+;enp0s3;IPv4;ubuntu2;_timeserver._udp;local

myline1 is :+;enp0s3;IPv4;ubuntu1;_timeserver._udp;local

myline1 is :=;enp0s3;IPv4;ubuntu2;_timeserver._udp;local;ubuntu2.local;192.168.1.7;123;"type=configured" "source=ntp"

myline1 is :=;enp0s3;IPv4;ubuntu1;_timeserver._udp;local;ubuntu1.local;192.168.1.105;123;"type=configured" "source=ntp"

*** stack smashing detected ***: terminated
Aborted (core dumped)

How do I avoid this issue ? (I have seen alternative of using flag -fnostackprotect, But I want to solve it without that flag)