warn64

Applies to C Applies to C++

Purpose

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

Syntax


Syntax Diagram

Notes

All generated messages have level Informational.

The -qwarn64 option functions in either 32- or 64-bit compiler modes. In 32-bit mode, it functions as a preview aid to discover possible 32- to 64-bit migration problems.

Informational messages are displayed where data conversion may cause problems in 64-bit compilation mode, such as:

Related References

Compiler Command Line Options
32, 64 IBM Copyright 2003