Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!yale!cmcl2!lanl!matthias@mpx2.lampf.lanl.gov
From: matthias@mpx2.lampf.lanl.gov (Matthias, Bjorn E.)
Newsgroups: comp.lang.fortran
Subject: insidious access violation
Keywords: access violation
Message-ID: <62748@lanl.gov>
Date: 13 Sep 90 03:07:45 GMT
Sender: news@lanl.gov
Reply-To: matthias@mpx2.lampf.lanl.gov
Followup-To: comp.lang.fortran
Organization: LAMPF Data Analysis Center, Los Alamos, New Mexico
Lines: 19

Any suggestions to solve the following would be much appreciated:
In a medium sized piece of code (executable of about 200 blocks)
there is a very simple subroutine that I put in to cause things to wait
until <RETURN> is hit; this to allow looking at a plot on the screen.

	subroutine look
	character*1 answ
	write(6,'(/,/,''$Hit <RETURN> to continue ...'')')
	read(5,'(a)') answ
	return
	end

SOMETIMES the READ statement bombs with an access violation, sometimes not.
I'm stumped.  Ideas?
Thanks very much in advance!

---
Bjorn E. Matthias                       MATTHIAS@LAMPF  (BITNET)
    matthias@mpx0.lampf.lanl.gov  or  matthias@mpx1.lampf.lanl.gov (internet)