warn_no_side

Controls the issuing of warning messages for redundant statements.

Syntax

#pragma warn_no_side_effect on | off | reset

Remarks

If you enable this pragma, the compiler issues a warning message when it encounters a statement that produces no side effect. To suppress this warning message, cast the statement with (void) . Example of Pragma warn_no_side_effect provides an example.

Listing 1. Example of Pragma warn_no_side_effect

#pragma warn_no_side_effect on
void func(int a,int b)
{
   a+b; /* WARNING: expression has no side effect */
   (void)(a+b); /* OK: void cast suppresses warning. */
}

By default, this pragma is off .