PSS ID Number: 104859
Article Last Modified on 3/24/2000
The information in this article applies to:
- Microsoft FORTRAN PowerStation for MS-DOS 1.0
This article was previously published under Q104859
SYMPTOMS
Using the undocumented compiler option /4I2 or the equivalent undocumented metacommand $STORAGE:2 will:
- Miscalculate integer array sizes for DATA statements
- Interpret explicitly declared INTEGER*4 variables as INTEGER*2
RESOLUTION
The compiler option /4I2 and the metacommand $STORAGE:2 are not intended to be used with this compiler. They are not documented for the same reason. However, any erroneous behavior may be avoided by replacing every instance of "integer " with "integer*2 " and declaring
implicit integer*2 (i-n)
at the very beginning of each subroutine.
It is necessary to replace every instance of "integer " with "integer*2 " because explicit integer declarations are treated as integer*4.
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.
MORE INFORMATION
Sample Code 1
C Compile options needed: none (or comment out line 1 and use: /4I2)
$storage:2
integer iunit(3)
data iunit/100,10,1/
print*, iunit
end
C This will generate the following error:
C F2408: IUNIT : DATA : too few constants to initialize item
Sample Code 2
C Compile options needed: none (or comment out line 1 and use: /4I2)
$storage:2
integer*4 i,j
j = 30000
i = j*j
print*, i,j
end
C When run, this will give the following wrong result:
C -5888 30000
C instead of the following correct result:
C 900000000 30000
FORTRAN PowerStation version 1.0 can be differentiated from the maintenance release version 1.0a by invoking the linker. Typing link32 | more from \F32\BIN directory will show version 2.8 for FORTRAN PowerStation version 1.0, and it will show version 1.0f for the maintenance release version 1.0a.
Additional query words: 1.00 buglist1.00 fixlist1.00a
Keywords: kbbug KB104859
Technology: kbAudDeveloper kbFORTRANPower100DOS kbFortranSearch kbZNotKeyword3
