warn_ptr_int_conv. NXP CodeWarrior Development Studio

Chapter 31 Pragmas for Diagnostic Messages

i = sockcount(); while (--i); /* WARNING: empty loop. */

matchsock(i);

If you intended to create an infinite loop, put white space or a comment between the while statement and the semicolon. The statements in the listing below, suppress the above error or warning messages.

Listing 31-21. Intentional empty statements

while (i++) ; /* OK: White space separation. */ while (i++) /* OK: Comment separation */ ;

By default, this pragma is off

.

31.30 warn_ptr_int_conv

Controls the recognition the conversion of pointer values to incorrectly-sized integral values.

Syntax

#pragma warn_ptr_int_conv on | off | reset

Remarks

If you enable this pragma, the compiler issues a warning message if an expression attempts to convert a pointer value to an integral type that is not large enough to hold the pointer value.

Listing 31-22. Example for #pragma warn_ptr_int_conv

#pragma warn_ptr_int_conv on char *my_ptr; char too_small = (char)my_ptr; /* WARNING: char is too small. */

See also

"warn_any_ptr_int_conv" on page 231

.

By default, this pragma is off.

31.31 warn_resultnotused

Controls the issuing of warning messages when function results are ignored.

Syntax

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

10.2, 01/2016

Freescale Semiconductor, Inc.

497