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Q63817: FIX: Protection Violation Compiling BLOCK DATA with Implied DO

Article: Q63817
Product(s): Microsoft Fortran Compiler
Version(s): 5.0
Operating System(s): 
Keyword(s): 
Last Modified: 04-MAY-2001

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The information in this article applies to:

- Microsoft FORTRAN compiler for OS/2, version 5.0 
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SYMPTOMS
========

An attempt to compile an application fails and the compiler generates a
protection violation. This error does not occur when compiling the application
in MS-DOS or in an MS-DOS compatibility window in OS/2.

CAUSE
=====

The application contains a BLOCK DATA subprogram that uses an implied DO list
and the compiler command line includes the /4Ya option switch.

RESOLUTION
==========

To address this problem, perform one of the following two steps:

- Change the compiler command line to remove the /4Ya compiler option switch
  when the application includes a BLOCK DATA subprogram.

- Modify the source code to remove the implied DO list from the BLOCK DATA
  subprogram.

STATUS
======

Microsoft has confirmed this to be a problem in FORTRAN version 5.0 for OS/2.
This problem was corrected in FORTRAN version 5.1 for MS-DOS and OS/2.

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

The following code example demonstrates this problem.

Sample Code
-----------

  C Compile options needed: /4Ya to reproduce problem

        BLOCK DATA
        INTEGER VAR(2)
        COMMON /TEST/ VAR
        DATA (VAR(I), I = 1, 2) /0, 1/ 
        END

Additional query words: 5.00 buglist5.00 fixlist5.10

======================================================================
Keywords          :  
Technology        : kbAudDeveloper kbFortranSearch kbZNotKeyword3 kbFORTRAN500OS2
Version           : :5.0
Issue type        : kbbug
Solution Type     : kbfix

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