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Q112341: FIX: LOC Fails on Double COMPLEX Structure Element

Article: Q112341
Product(s): Microsoft Fortran Compiler
Version(s): 1.0,1.0a
Operating System(s): 
Keyword(s): kbFortranPS kbLangFortrankbbuglist kbfixlist
Last Modified: 24-MAR-2000

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The information in this article applies to:

- Microsoft FORTRAN PowerStation for MS-DOS, versions 1.0, 1.0a 
- Microsoft Fortran Powerstation 32 for Windows NT, version 1.0 
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SYMPTOMS
========

Using the LOC intrinsic function to return the address of a COMPLEX*16 structure
variable results in an address of 0 (zero).

RESOLUTION
==========

Use the LOC function on a different type of field in the structure and then
calculate the address of the DOUBLE PRECISION COMPLEX field. If necessary,
create a UNION block to map a different variable type to the double COMPLEX
element.

STATUS
======

Microsoft has confirmed this to be a problem in FORTRAN PowerStation for Windows
NT, version 1.0 and for MS-DOS, versions 1.0 and 1.0a. This problem was
corrected in FORTRAN PowerStation 32, version 4.0.

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

The following sample illustrates the problem:

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

  c Compile options needed: none
  c
        structure /nest/ 
          double complex tests
        end structure

        record /nest/ t
        t.tests=(0.,0.)
        i = loc(t.tests)
        print10, 'loc(t.tests)          ', i,i
  10    format(1x,a,i8,3x,z)
        end

Additional query words: 1.00 1.00a

======================================================================
Keywords          : kbFortranPS kbLangFortran kbbuglist kbfixlist
Technology        : kbAudDeveloper kbFortranSearch kbZNotKeyword2 kbZNotKeyword3 kbFORTRANPower32100NT kbFORTRANPower100DOS kbFORTRANPower100aDOS
Version           : :1.0,1.0a
Issue type        : kbbug
Solution Type     : kbfix

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

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