KB118550 - BUG: READ and WRITE Fail on Unit 64

MORE INFORMATION

When using list directed I/O on unit 64, the following error message is produced:

run time error F6201: WRITE(internal)
- list-directed I/O not consistent with OPEN options

With binary I/O, the error message produced is:

run-time error F6204: READ(internal) - unformatted I/O not consistent with OPEN options

When using formatted I/O, the following error message is produced when writing:

run-time error F6600: WRITE(internal) - internal file overflow

A formatted READ fails silently without any error message.

Use the following sample code to produce error message F6201 at run time.

c compile options needed: none

      character*10 ch/'1234567890'/ 
      open(64,file='test.dat')
      write(64,*) ch
      end