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Q120218: FIX: Warning C4056 Generated When /Op Option is Used

Article: Q120218
Product(s): Microsoft C Compiler
Version(s): 2.0,4.0,4.1,4.2,5.0
Operating System(s): 
Keyword(s): kbHWMAC kbVC400bug kbVC410bug kbVC420bug kbVC500bug kbVC600fix
Last Modified: 11-FEB-2002

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The information in this article applies to:

- The C/C++ Compiler (CL.EXE), used with:
   - Microsoft Visual C++, 32-bit Editions, versions 2.0, 4.0, 4.1, 4.2, 5.0 
   - Microsoft Visual C++, Macintosh Cross-Development Addon, version 2.0 
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SYMPTOMS
========

The following warning is generated when the sample code listed in the More
Information section below is compiled with the option /Op and the warning level
set to 3 or higher:

  warning C4056 : overflow in floating-point constant arithmetic

RESOLUTION
==========

Ignore the warning as it is generated incorrectly. Alternatively, you can
suppress the warning by using the /W2 option.

STATUS
======

This bug was corrected in Microsoft Visual C++, version 6.0.

MORE INFORMATION
================

Sample Code to Reproduce Problem
--------------------------------

  /* Compile options needed:   /Op /W3
  */ 

  void main()
  {
     double i;
     i = -1.0;
  }

Additional query words: 9.00 10.00 10.10 10.20

======================================================================
Keywords          : kbHWMAC kbVC400bug kbVC410bug kbVC420bug kbVC500bug kbVC600fix 
Technology        : kbVCsearch kbAudDeveloper kbCVCComp
Version           : :2.0,4.0,4.1,4.2,5.0
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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