MacOS Terminal doesnt show in-/output when debugging

[slepp]

Hi QT-Community,

I started programming at my university just a week ago.
As I am working on MacOS I could find somebody to help me with my problem so far.

I wrote 3x very small program with an in- and output, with all of them I have the same issue.

When I run the program I dont have any problems at all.
The in/output is displayed in the terminal.

As soon as I start debugging, my Terminal doesnt show any in- or output.

I have sent my code to a friend who is working on windows and there it works just fine.
So I assume this problem results in some false configuration on my mac, but I just cant find it.

I would be very glad about support, thank you very much in advance!

Best,
slepp

MacOS BigSur 11.2.3
Qt Creator 4.14.2
Based on Qt 5.15.2 (Clang 11.0 (Apple), 64 bit)

[SGaist]

Hi and welcome to devnet,

Did you try to debug directly on the Terminal ?

By the way, please post your code as text using the coding tags. This will allow people to more easily re-use it to test your issue.

[slepp]

Hi! Thank you very much for your reply!

First things first, here is the code i was using (even if I think the code is not the problem as terminal shows in-/output if i run the programm):

#include <iostream>
using namespace std;

int main(void)
{
    //define variables
    int i = 0;
    int length, volume, surface, square;

    //user input
    cout << "Geben Sie eine ganze positive Zahl ein!" <<endl;
    cin >> i;

    //calculation
    length = i;
    square = length*length;
    surface = 6 * square;
    volume = square * length;

    //output
    cout << "Oberflaeche:" << surface <<endl;
    cout << "Volumen:" << volume <<endl;

    return 0;
}

As my instructor told me, I have selected "Run in Terminal" in the project settings / run.
Therefore my terminal opens as soon as i click on "start debugging" but nothing happens in there.
I hope that answers your question? Do you have any tips how i can solve this?

[SGaist]

You misunderstood my question: what happens if you start Terminal manually and do the debugging directly from there ?

[slepp]

I have never tried it and to be honest i dont know how this works as i justed started a week ago.
Is there any manual / guidance i can follow and try?

[SGaist]

Apple has you covered here.

[slepp]

sven@Svens-MBP Desktop % $lldb /Users/sven/PAD1_Praktikum1_Aufgabe1/PAD1_Praktikum1_Aufgabe1
Geben Sie eine ganze positive Zahl ein!
10
Oberflaeche:600
Volumen:1000
sven@Svens-MBP Desktop % 

It seems that its working. I was able launch/debug the program.

[SGaist]

Looks like it's a Qt Creator issue.

Do you have the same if you debug a default Qt application ?

[slepp]

Yes, same problem :-(

[mpergand]

Hi,
On macOS syslog() must be use:

#include <syslog.h>

int main(int argc, char *argv[])
{
    syslog(LOG_ERR,"%s\n","hello");
    return a.exec();
}

See: Here

[SGaist]

@slepp said in MacOS Terminal doesnt show in-/output when debugging:

Yes, same problem :-(

That's not a Qt default application. What I meant a default Qt widget application.

[SGaist]

@mpergand this is unrelated to the problem at hand. It's the debugging that fails from Qt Creator.

[slepp]

@SGaist said in MacOS Terminal doesnt show in-/output when debugging:

Qt widget application

Oh sorry, now I tried to create a QT widget application, according to this guideline: https://doc.qt.io/qtcreator/creator-writing-program.html

When I debug with the terminal, nothing happens in there as well.

[SGaist]

Which version of Xcode did you install ?

[slepp]

I've installed Version12.4 (12D4e)

[SGaist]

Looks like it might a bug.

Can you test the current beta version of Qt Creator ?

[slepp]

I just tried the same thing under version Qt Creator 4.15.0-rc1 (4.14.84), still the same problem as with Qt Creator 4.14.2 :-(

[SGaist]

Then you should check the bug report system to see if there's something related there.