FIX: Divide by Zero Run-Time Error Not Produced

 Last reviewed: September 18, 1997
Article ID: Q109998
1.00 | 1.00 MS-DOS | WINDOWS kbtool kbfixlist kbbuglist

The information in this article applies to:

  • Microsoft FORTRAN PowerStation for MS-DOS, version 1.0
  • Microsoft FORTRAN PowerStation 32 for Windows NT, version 1.0

SYMPTOMS

Under certain conditions, the Microsoft FORTRAN compiler will execute a program without reporting any error, when in fact a divide-by-zero error has occurred.

CAUSE

The run-time library is not being brought into the executable, so no run- time error will occur.

STATUS

Microsoft has confirmed this to be a problem in FORTRAN PowerStation 32 for Windows NT and MS-DOS, version 1.0. This problem has been resolved with FORTRAN PowerStation maintenance release version 1.0a for MS-DOS.

MORE INFORMATION

FORTRAN PowerStation version 1.0 for MS-DOS 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 for MS-DOS, and it will show version 1.0f for the maintenance release version 1.0a. This problem is rare because almost every program written uses run-time functions. To make the program give the proper run-time error, use any run-time routine such as WRITE to ensure the run-time routines are part of the executable. The sample code below will exhibit the run-time error. If the WRITE statement is removed, the code will complete without an error.

Sample Code

C compile options needed: none C 

       a=1.
       b=0.
       c=a/b
       write (*,*) c
       end

Additional reference words: 1.00 buglist1.00 fixlist1.00a
KBCategory: kbtool kbfixlist kbbuglist
KBSubcategory: FLIss
Solution Type : kbfix

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Last reviewed: September 18, 1997
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