F77 and Sun OS4.1

[Mark R. Simpson]

As reported in this newsgroup,

* f77 1.3 is INCOMPATIBLE with f77 1.2 (and earlier) object code.
* Version 1.3 core dumps when writing binary files, as shown below:

ccccccccccccccccccccc
      program bomb
c
c     change (NP=300)  ->  OK
c            (NP,3000) ->  BOMB !!!!
c
      PARAMETER(NP=3000)
      integer i,np,lu
      real array(NP)
      data lu/3/
c
      open(unit=lu, form="unformatted", file="delete-me")
c
      do 10 i=1,np
         array(i) = 0.0
 10   continue
c
      write(lu) (array(i), i=1,np)
c
      stop
      end
cccccccccccccccccccc

So I have two questions,

1) Can an earlier version of f77 (say 1.1 or 1.2) be used 
   reliably with SunOS 4.1?

2) For those of you who depend on using FORTRAN on a Sun, have you
   upgraded to 4.1, and if so, what other problems/difficulties have you
   encountered?

Mark R. Simpson
Philips Laboratories					uunet!philabs!mrs
North American Philips Corporation			       or
Briarcliff Manor, NY 10510			    mrs at philabs.philips.com
(914) 945-6163