Command line arguments are not forwarded to the program when debugging

[m-kro]

Describe the bug
I want to debug a program which accepts arguments. When I use the Managed Build (Legacy Makefile?), the arguments from the debug configuration cannot be accessed while debugging. Instead it looks like the program didn't get any further arguments supplied.

To Reproduce
Steps to reproduce the behavior:

1. Create new C++ project in Eclipse: Managed Build, Executable, choose Hello World Project
2. Edit the main function in the cpp source to have the signature int main(int argc, const char* argv[]) to be able to access program arguments
3. Create a debug configuration (Run > Debug Configurations > C/C++ Application), set "a b c" in program arguments field, confirm with Apply
4. Add a breakpoint in the first line of the main function (or activate the option to stop there by default)
5. Inspect argc parameter in Debug. It reads 1 instead of 4 (3 program arguments) and the program arguments from the debug configuration are not accessible

Expected behavior
The arguments from the debug configuration should be accessible in the main function.

Version Information (please complete the following information):

• Linux, Eclipse 2025-06, CDT 12.1.0

Additional context
GDB traces

[jld01]

Hi @m-kro, your GDB trace indicates that you are using a Remote C/C++ Application launch, not a local one. Note the line:

-target-select remote localhost:2345

If this is intentional, you will need to pass the program arguments on the gdbserver command line as described at: https://sourceware.org/gdb/current/onlinedocs/gdb.html/gdbserver-man.html

Does this explanation resolve the issue you are reporting? Please confirm.

[m-kro]

@jld01 Well this is not intentional (and I have chosen "C/C++ Application" as launch type, not "C/C++ Remote Application").