...to the function and put in a BP but I cannot step in to it...

...debug. It's very weird for a BP too jump to a line outside the...

That's a known issue with the dmd backend: it doesn't generate any code...

...return;
			return;
			return;
			return;
		}

I've added BP's to every return and even added...

...lets i above show up
	{

putting a bp on d, i does not show up...

...obj.Data;
Mod!(float)(data, 10000);

A BP on data shows the correct data when...

Theoretically nothing's stopping a debugger from setting a breakpoint in between those 2 statements...

...int y = 0;
       x++;
    }
}

I put a BP on the `int y = 0;` line and...

Why would that be non-trivial?

semantically there is nothing different between

statement; statement;

and...

Debug information is mapped to machine-code on a source line by source line basis...