BUG: F1001 Error /4fps1 and /Ox with Exponent Calculation

Last reviewed: April 9, 1996
Article ID: Q149478

The information in this article applies to:

Microsoft Fortran PowerStation for Windows 95 and Windows NT, version 4.0

SYMPTOMS

Using the /4fps1 and /Ox compiler options together and performing a calculation involving raising an integer constant to the power of a negated integer variable causes the following internal compiler error:

   fatal error F1001: INTERNAL COMPILER ERROR
   (compiler file '..\..\\P2\confold.c', line 296)

   Please choose the Technical Support command on the Developer Studio
   Help menu, or open the Technical Support help file for more information

RESOLUTION

Make the INTEGER constant part a REAL constant.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Sample Code to Illustrate Problem

! Compile options needed: /4fps1 /Ox

      i = 6
      test = 10**(-i)    ! Comment this line for workaround

! test = 10.0**(-i) ! Uncomment this line for workaround

      print *, test
      end

Additional reference words: 4.00
KBCategory: kbprg kbbuglist
KBSubcategory: FORTLngIss

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Last reviewed: April 9, 1996
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