-qwarn64

Pragma equivalent

None.

Purpose

Enables checking for possible data conversion problems between 32-bit and 64-bit compiler modes.

When -qwarn64 is in effect, informational messages are displayed where data conversion may cause problems in 64-bit compilation mode, such as:

Truncation due to explicit or implicit conversion of long types into int types
Unexpected results due to explicit or implicit conversion of int types into long types
Invalid memory references due to explicit conversion by cast operations of pointer types into int types
Invalid memory references due to explicit conversion by cast operations of int types into pointer types
Problems due to explicit or implicit conversion of constants into long types
Problems due to explicit or implicit conversion by cast operations of constants into pointer types

Syntax


        .-nowarn64-.   
>>- -q--+-warn64---+-------------------------------------------><

Defaults

-qnowarn64

Usage

This option functions in either 32-bit or 64-bit compiler modes. In 32-bit mode, it functions as a preview aid to discover possible 32-bit to 64-bit migration problems.

Predefined macros