Article ID: 86062 - Last Review: December 1, 2003 - Revision: 2.0

FIX: F1001 regMD.c, Line 338; Huge Array as Array Index

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SYMPTOMS

Using the Microsoft FORTRAN compiler versions 4.0, 4.01, 4.1, 5.0, and 5.1 under MS-DOS and versions 4.1, 5.0, and 5.1 under OS/2 to compile programs that contain concatenations of CHARACTER arrays where the array elements are specified using an element of a huge INTEGER array can generate the following error:
fatal error F1001: Internal Compiler Error
The compiler file varies as follows:
Version 5.1: (compiler file '@(#)regMD.c:1.9', line 338)

Version 5.0: (compiler file '@(#)regMD.c:1.8', line 338)

Versions 4.01 and 4.1: (compiler file '@(#)regMD.c:1.79', line 291)

Version 4.0: (compiler file '@(#)regMD.c:1.74', line 1304)
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RESOLUTION

Assign the value of the huge index array to a temporary variable and use this variable in the concatenation statement.
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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 4.1, 5.0, and 5.1 for OS/2. This problem was corrected in FORTRAN PowerStation, version 1.0.
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MORE INFORMATION

Sample Code 1

The following code reproduces the problem: 
       character*2 c
      character*1 c1(1), c2(1)
      integer*2   index(32769,1)

      c = c1(index(i,k))//c2(index(i,k))
      end
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Sample Code 2

The following code corrects the problem: 
      character*2 c
      character*1 c1(1), c2(1)
      integer*2   index(32769,1), temp

      temp = index(i,k)          ! temporary variable temp
      c = c1(temp)//c2(temp)     ! eliminates the error
      end
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APPLIES TO
  • Microsoft FORTRAN Compiler 4.0
  • Microsoft FORTRAN Compiler 4.01
  • Microsoft FORTRAN Compiler 4.1
  • Microsoft FORTRAN Compiler 5.0
  • Microsoft FORTRAN Compiler 5.1
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Keywords: 
kbfix KB86062
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Retired KB ArticleRetired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
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