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Q111235: BUG: D2030 or DX1020 Error on Assumed-Size Array Expressions

Article: Q111235
Product(s): Microsoft Fortran Compiler
Version(s): 1.0,1.0a
Operating System(s): 
Keyword(s): 
Last Modified: 03-NOV-1999

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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
========

Compiling a file that contains an assumed-size array expression may produce the
following error under Windows NT:

  Command Line Error D2030: INTERNAL COMPILER ERROR

Under straight MS-DOS, the following error may be produced during compilation:

  DOSXNT : fatal error DX1020: unhandled exception: Page fault;

Under the Windows MS-DOS box, no error is produced. The appropriate errors for
this situation are:

  error F2652: array expression: cannot be assumed-size array

  error F2564: incompatible types in assignment

CAUSE
=====

Because the size of an assumed-sized array is not known at compile time, you
cannot use an assumed-size array in an array expression.

RESOLUTION
==========

Do not use assumed-size arrays in array expressions.

STATUS
======

Microsoft has confirmed this to be a problem in FORTRAN PowerStation 32 for
Windows NT version 1.0 and MS-DOS version 1.0 and 1.0a. We are researching this
problem and will post new information here in the Microsoft Knowledge Base as it
becomes available.

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

The following sample illustrates the problem:

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

  c Compile options needed: none
  c
        INTEGER*2 FUNCTION GETSP(SPVALU)
        INTEGER*2       COMBUF
        INTEGER*2       SPVALU(*)
        SPVALU = COMBUF  !  Array expression sets each element to COMBUF
        END

Additional query words: 1.00 1.00a ICE array operations

======================================================================
Keywords          :  
Technology        : kbAudDeveloper kbFortranSearch kbZNotKeyword2 kbZNotKeyword3 kbFORTRANPower32100NT kbFORTRANPower100DOS kbFORTRANPower100aDOS
Version           : :1.0,1.0a

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