Suppress warning for unused parameters in function [duplicate]

Question

This question already has answers here:

How do I best silence a warning about unused variables? (22 answers)

Closed 9 years ago.

I am programming in C Linux.

I have a few functions in my code that i receive as parameters X parameters, but i do not use all of the parameters in it.

I am getting a warning of unused variables.

I would like the compiler to catch allot of warnings, except for this one.

What flag in the make file will do this trick?

Thanks Matt

Answer 1

Assuming this

int f(int x, int y)
{
  return y;
}

to provoke the warning mentiond by the OP.

For gcc just do this

int f(int x __attribute__ ((unused)), int y)
{
  return y;
}

to have the waninng disappear.

---

A more generic trick is to just do:

int f(int x, int y)
{
  x = x;
  return y;
}

---

For gcc specifing the option -Wno-unused-parameter should disable this warning.