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From: wang@math.ufl.edu
Newsgroups: comp.lang.fortran
Subject: SUN Fortran limitation?????
Message-ID: <1991Mar5.031012.12568@math.ufl.edu>
Date: 5 Mar 91 03:10:12 GMT
Sender: news@math.ufl.edu
Reply-To: wang@math.ufl.edu
Organization: Department of Mathematics, University of Florida
Lines: 31

Hi, you fortran experts!

I was writing a test program. I wanted to write a character string
with, say, 10000 characters onto an unformatted file. Here is my
little program:

      CHARACTER*1 ch(10000)
      PRINT *,'Enter a positive integer less than 10000: '
      READ *,kk
      DO 10 i = 1, kk
 10   ch(i) = CHAR(67)
      OPEN(UNIT=12,FILE='bork.out',FORM='unformatted')
      WRITE(12) (ch(i),i=1,kk)
      END

I had of course no problem on compiling, but the program got crashed
when I tried to write an array with more than 8184 characters! The
message I got is:

*** Segmentation Violation = signal 11 code 3

I tried to find what this message means from the fortran compiler
manual, but no such message could be found from it. Can any of you
tell me what the catch is? I am running a SUN Sparc IPC with SunOS
4.1.1 and Sun Fortran 1.2. I'd like to ask: Does SUN Fortran have any
limitations on the maximum record length of an unformatted file??? If
so, such limitations seem not to exist on SUN-3 systems because the
above program worked fine for any integers I entered. Are there any bugs
in SUN Fortran 1.2?

-Liyun