I am aware that some IDEs, like MS Studio have an option to find all uses of a variable in code.
However, from what I can see, that finding stops when you pass a variable as a parameter to a function. I.e. it does not track further usage of that variable within the called function or functions to which it, in turn, passes the variable.
Is there any tool (code browser, IDE, call it what you will) which will let me do this for c/c++, preferably for free?
I don't mind swapping operating systems on those occasions when I want to use this. I have Googled, but didn't find anything (maybe I didn't look deeply enough), so I won't place any restrictions on o/s or budget.