Article: Q106729
Product(s): Microsoft Fortran Compiler
Version(s): 1.0,1.0a
Operating System(s):
Keyword(s):
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
========
Passing an unopened unit number to the EOF intrinsic function or the BACKSPACE
command generates the run-time error:
FORTRAN PowerStation for MS-DOS
-------------------------------
DOSXMSF : fatal error DX1020: unhandled exception: General protection fault;
FORTRAN PowerStation 32 for Windows NT
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Application Error
The instruction at "0x0001316e" referenced memory at 0x00000000". The memory
could not be "read".
CAUSE
=====
The following run-time error should be produced:
run-time error F6420: EOF()
- unknown unit number
RESOLUTION
==========
Only use the EOF function and BACKSPACE command on units that are currently
open.
STATUS
======
Microsoft has confirmed this to be a problem in the Microsoft products listed at
the beginning of this article. This problem was fixed in FORTRAN PowerStation,
version 4.0.
MORE INFORMATION
================
The following sample code generates a DX1020 error (GPF) when run:
Sample Code
-----------
C Compile options: None
logical l
open(2,file='test.out')
l = EOF(1)
end
Additional query words: 1.00 4.0 gpf gp-fault
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Keywords :
Technology : kbAudDeveloper kbFortranSearch kbZNotKeyword2 kbZNotKeyword3 kbFORTRANPower32100NT kbFORTRANPower100DOS kbFORTRANPower100aDOS
Version : :1.0,1.0a
Issue type : kbbug
Solution Type : kbfix
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