BUG: Console I/O Problem; CR/LF Skipped After File Open

• Microsoft FORTRAN PowerStation 32 for Windows NT, version 1.0 and 4.0

SYMPTOMS

A console application that opens a file with a unit specifier of 5 may cause subsequent screen output to appear on the same line (without carriage return and linefeed characters).

CAUSE

This problem seems to occur only when the application writes to the screen before opening unit 5.

RESOLUTION

If unit number 5 must be used for an external file, OPEN that file before performing any WRITE statements to the screen. Running the program with MORE piping (for example, | MORE) to display output one screen at a time also alleviates the error.

STATUS

Microsoft has confirmed this to be a problem in Microsoft FORTRAN PowerStation 32 for Windows NT, version 1.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

The following sample program demonstrates the problem:

Sample Code

C Compile options required: none

      character*12 buffer
      do i=5, 7
         write(buffer,'(i5,a)') i,'.dat'
         write(*,*) 'Filename is: ', buffer
         open(i,file=buffer)
      end do
      end

Output

Filename is:     5.dat   Filename is:     6.dat
Filename is:     7.dat