extended_errorcheck. NXP CodeWarrior Development Studio

extended_errorcheck

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warn_resultnotused

•

warn_undefmacro

•

warn_uninitializedvar

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warn_unusedarg

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warn_unusedvar

31.1 extended_errorcheck

Controls the issuing of warning messages for possible unintended logical errors.

Syntax

#pragma extended_errorcheck on | off | reset

Remarks

If you enable this pragma, the compiler generates a warning message (not an error) if it encounters some common programming errors:

It also issues a warning message when it encounters a delete operator for a class or structure that has not been defined yet. The listing below shows an example.

Listing 31-1. Attempting to delete an undefined structure

#pragma extended_errorcheck on struct X; int func(X *xp)

{

delete xp; // Warning: deleting incomplete type X

}

• An integer or floating-point value assigned to an enum

type. The listing below shows an example.

Listing 31-2. Assigning to an Enumerated Type

enum Day { Sunday, Monday, Tuesday, Wednesday,

Thursday, Friday, Saturday } d; d = 5; /* WARNING */ d = Monday; /* OK */ d = (Day)3; /* OK */

• An empty return

statement in a function that is not declared void

. For example, a non-void function with an empty return statement, listed below, results in a warning message.

Listing 31-3. A non-void function with an empty return statement

int MyInit(void)

{

CodeWarrior Development Studio for Advanced Packet Processing Build Tools Reference Manual, Rev.

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480 Freescale Semiconductor, Inc.