Controls the issuing of warnings for redundant statements.
#pragma warn_no_side_effect on | off | reset
If you enable this pragma, the compiler issues a warning when it encounters a statement that produces no side effect. To suppress this warning, cast the statement with (void). Listing 10.43 provides an example
#pragma warn_no_side_effect on
void foo(int a,int b)
{
a+b; // WARNING: expression has no side effect
(void)(a+b); // void cast suppresses warning
}
For more information about this warning, see “Redundant Statements”.
This pragma corresponds to the Expression Has No Side Effect panel setting . To check this setting, use __option (warn_no_side_effect), described in Checking Settings. The default setting is off.