DOCUMENT:Q112005  04-NOV-1999  [fortran]
TITLE   :BUG: Illegal Formal Argument and -Zi Crash Compiler
PRODUCT :Microsoft Fortran Compiler
PROD/VER::1.0,1.0a
OPER/SYS:
KEYWORDS:

======================================================================
-------------------------------------------------------------------------------
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 FORTRAN PowerStation to compile a file that contains a subprogram using a
formal argument that has the same name as that subprogram may produce the
following errors under Windows NT:

   error F2209: (variable_name) : illegal as formal argument
   fatal error C1900: Il mismatch between 'P1' version '0' and 'P2'
   version '19930414'

These error messages are then followed by a stack overflow exception.

When using FORTRAN PowerStation for MS-DOS, the F2209 error is generated. If
compiling from the Visual Workbench, the following errors also occur:

   error F2513: (variable_name) : not a variable

   error F2530: (variable_name) : symbol class illegal here

   error F2040: label on continuation line

   error F2037: illegal label field

The F2040 and F2037 errors scroll repeatedly showing negative line numbers, until
finally the compiler crashes with a DX1020 general protection (GP) fault error.
The F2040 and F2037 errors do not occur if compiled from the MS-DOS command
line, but the DX1020 error does.

In all cases the F2209 error is correct.

CAUSE
=====

This error occurs only when using the -Zi compiler option.

RESOLUTION
==========

Correct the error by renaming the formal argument. Then recompile with -Zi.

STATUS
======

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

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

The sample below illustrates the problem:

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

   c Compile options required: -Zi
   c
           integer function i(f,i)
           integer f
           i=f(i)
           return
           end

Additional query words: 1.00 1.00a Dr. Watson subroutine

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

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

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