Segmentation fault on saving json to file

[aeon0]

I get a segmentation fault when saving a json data object to a file like this:

#include <iostream>
#include <fstream>
#include "json.hpp"

bool SaveToFile(nlohmann::json data) {
    std::ofstream jsonFile;

    jsonFile.open("testFile.json" , std::ofstream::out | std::ofstream::trunc);
    jsonFile << data;
    jsonFile.close();

    return true;
}

int main() {
    std::cout << "========== Start Application ===========" << std::endl;

    return 0;
}

The problem is, I cant even debug anything. Because even if I don't use the function I get the segmentation fault.
When changing: jsonFile << data; to jsonFile << "Test String";, I dont get any errors.

I am using Visual GDB with gcc 4.9.2 (from here: http://gnutoolchains.com/raspberry/).

Please ask if any other information or clarification is needed!

[ChristophJud]

I cannot reproduce it on a normal Ubuntu with a gcc 4.9.3. Must be something raspberrypi-specific. Can't you simply debug with the standard gdb and look at the backtrace after the program crashes?

[nlohmann]

Maybe @navybk can reproduce this on a Raspberry.

[aeon0]

Actually, It works on a raspberry. I just tried. There error occures on a odroid xu4.

[nlohmann]

Ok. Thanks!

[aeon0]

I guess this can be closed as I susspect even thou the error occures when using anything json related, it is not the real root of it.

[nlohmann]

Thanks for reporting anyway. If you can find anything more, I would be happy to have a look!

[aeon0]

Just in case of the very unlikely event that someone would run into the same problem in the future.
The error was because of Visual GDB (what exactly... I don't know). However what fixed the whole issue was upgrading from Ubuntu 15.10 to 16.04.