Category
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
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
None.