unused

Controls the suppression of warning messages for variables and parameters that are not referenced in a function.

Syntax

  #pragma unused ( var_name [, var_name ]... )

var_name

The name of a variable.

Remarks

This pragma suppresses the compile time warning messages for the unused variables and parameters specified in its argument list. You can use this pragma only within a function body. The listed variables must be within the scope of the function.

In C++, you cannot use this pragma with functions defined within a class definition or with template functions.

Listing: Example of Pragma unused() in C

#pragma warn_unusedvar on
#pragma warn_unusedarg on

static void ff(int a)

{

  int b;

#pragma unused(a,b)  

/* Compiler does not warn that a and b are unused. */

}

Listing: Example of Pragma unused() in C++

#pragma warn_unusedvar on
#pragma warn_unusedarg on

static void ff(int /* No warning */)

{

  int b;

#pragma unused(b)

/* Compiler does not warn that b is unused. */

}

This pragma does not correspond to any CodeWarrior IDE panel setting.