BUG: FOR2862 Error Caused by External Function Without Type

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

SYMPTOMS

When you don't fully qualify an external function with a type and attempt to use it in a WRITE statement, the following compilation error occurs:

   error FOR2862: procedure name <procedure> in I/O list

RESOLUTION

Fully qualify the externl function by giving it a type attribute.

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 and Workaround

! Compile options needed: none

      MODULE THE_MODULE
        IMPLICIT INTEGER(E)

        EXTERNAL EXTERN_FUNC

!        INTEGER, EXTERNAL :: EXTERN_FUNC
      END MODULE

      PROGRAM THE_PROGRAM
        USE THE_MODULE
        WRITE(6,*) EXTERN_FUNC()
      END PROGRAM THE_PROGRAM

      INTEGER FUNCTION EXTERN_FUNC()
        EXTERN_FUNC = 737
      END FUNCTION