warn_no_side_effect. NXP CodeWarrior Development Studio

warn_no_side_effect

int func()

{

/* WARNING: no return statement. */

}

31.26 warn_no_side_effect

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)

.

Listing 31-17 on page 482

provides an example.

Listing 31-17. 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

.

31.27 warn_padding

Controls the issuing of warning messages for data structure padding.

Syntax

#pragma warn_padding on | off | reset

Remarks

If you enable this pragma, the compiler warns about any bytes that were implicitly added after an ANSI C struct

member to improve memory alignment. Refer to the appropriate

Targeting

manual for more information on how the compiler pads data structures for a particular processor or operating system.

By default, this setting is off

.

CodeWarrior Development Studio for Power Architecture Processors Build Tools Reference Manual, Rev.

10.6, 02/2014

482 Freescale Semiconductor, Inc.