Article: Q104893
Product(s): Microsoft Fortran Compiler
Version(s): 1.0
Operating System(s):
Keyword(s):
Last Modified: 24-MAR-2000
-------------------------------------------------------------------------------
The information in this article applies to:
- Microsoft FORTRAN PowerStation for MS-DOS, version 1.0
-------------------------------------------------------------------------------
SYMPTOMS
========
Running a program compiled with both full optimization (/Ox) and extended error
handling ($DEBUG or /4Yb) may cause several problems including: incorrect
results, incorrect range errors, or hanging.
RESOLUTION
==========
To avoid these problems, remove either the full optimization compiler switch
(/Ox) or the extended run-time debugging option (/4Yb or $DEBUG).
STATUS
======
Microsoft has confirmed this to be a problem in FORTRAN PowerStation for MS-DOS,
version 1.0. This problem has been resolved with FORTRAN Powerstation
maintenance release version 1.0a for MS-DOS.
FORTRAN PowerStation version 1.0 can be differentiated from the maintenance
release version 1.0a by invoking the linker. Typing "link32 | more" (without the
quotation marks) from \f32\BIN directory will show version 2.8 for FORTRAN
PowerStation version 1.0, and it will show 1.0f for the maintenance release
version 1.0a.
MORE INFORMATION
================
The following code generates an incorrect range error if compiled with both /Ox
and /4Yb, but runs correctly if either /Ox or /4Yb is not used:
1
test.for(6) : run-time error F6096: $DEBUG
- array subscript expression out of range
Execution traceback:
from main program in test.for(6)
This is not a problem in Microsoft FORTRAN 5.1 or earlier.
Sample Code
-----------
C Compiler options required: /Ox and /4Yb
INTEGER IA(4)
data IA / 1, 2, 3, 4 /
DO 20 I=1,2
write(*,*) i
WRITE(*,*) (IA(J),J=(I-1)*2+1,4)
20 CONTINUE
end
Additional query words: 1.00 buglist1.00 fixlist1.00a
======================================================================
Keywords :
Technology : kbAudDeveloper kbFortranSearch kbZNotKeyword3 kbFORTRANPower100DOS
Version : :1.0
Issue type : kbbug
Solution Type : kbfix
=============================================================================