Command line arguments are not forwarded to the program when debugging

[m-kro]

Maybe I've overseen something as I'm rather new to CDT (but more or less familiar with Eclipse). I try to debug my program when called with some command line arguments but those are not forwarded to the main function. Everything works fine when running the release executable.
Obviously I entered the arguments in the respective fields of both the release and the debug launch configurations.

It happens as well when using a slightly adapted version of the HelloWorld example:

#include <iostream>
using namespace std;

int main(int argc, const char* argv[]) {
	cout << "!!!Hello World!!!" << endl; // prints !!!Hello World!!!
    for(int i = 0; i < argc; i++){
        cout << "Argument "<< i << " = " << argv[i] << endl;
    }
	return 0;
}

In the gdb traces the arguments are set at some point:

473,361 19-gdb-set --thread-group i1 args a b c

Still argc equals 1?! Does anybody know why the arguments don't show up? I use Eclipse 2025-06 under Linux if that matters...

[ewaterlander]

Hi @m-kro ,
Could you create an Issue for this?
And could you specify what type of project you used? Legacy Makefile, CMake, or Core Build Makefile.

[m-kro]

@ewaterlander I hope #1242 helps you determining the cause. I used Managed Build which seems to translate to Legacy Makefile?