FIX: $DECLARE Fails on Undeclared Argument-List Variables (31320)

The information in this article applies to:

Microsoft FORTRAN Compiler for MS-DOS 4.0
Microsoft FORTRAN Compiler for MS-DOS 4.01
Microsoft FORTRAN Compiler for MS-DOS 4.1
Microsoft FORTRAN Compiler for MS-DOS 5.0
Microsoft FORTRAN Compiler for MS-DOS 5.1
Microsoft FORTRAN compiler for OS/2 4.1
Microsoft FORTRAN compiler for OS/2 5.0
Microsoft FORTRAN compiler for OS/2 5.1

This article was previously published under Q31320

SYMPTOMS

When an application uses the $DECLARE metacommand and a variable without a type appears in the argument list of a subroutine, the compiler does not produce a compile time warning.

RESOLUTION

Use the IMPLICIT NONE statement, to force the compiler to generate a warning message.

STATUS

Microsoft has confirmed this to be a problem in Microsoft FORTRAN versions 4.0, 4.01, 4.1, 5.0, and 5.1 for MS-DOS and versions 4.1, 5.0, and 5.1 for OS/2. This problem was corrected in FORTRAN PowerStation.

MORE INFORMATION

The following sample code demonstrates the problem. Even though the code uses the $DECLARE metacommand, the following code compiles without any warning messages.

With FORTRAN PowerStation, the following messages are generated when you compile the sample code with /4Ys:

error F2026: metacommands are nonstandard

warning F4313: A : not previously declared

warning F4999: A : variable declared but not used

Sample Code

C     Compiler options required: none

$DECLARE
      SUBROUTINE POOT(A)
      A=1.0
      RETURN
      END

Modification Type:	Major	Last Reviewed:	12/1/2003
Keywords:	kbfix KB31320