Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!peb
From: peb@cs.purdue.EDU (Paul E. Buis)
Newsgroups: comp.lang.fortran
Subject: FORTRAN parameter passing
Keywords: parameter, call-by-reference, copy-in-copy-out
Message-ID: <7584@medusa.cs.purdue.edu>
Date: 6 Aug 89 22:55:47 GMT
Distribution: usa
Organization: Department of Computer Science, Purdue University
Lines: 5

Most FORTRAN implementations seem to use call by reference for passing
parameters.  However, I have heard of some that use copy in, copy out.
Since aliasing in FORTRAN is illegal (even if compilers never try to
check for it), what portability problems may arise for the user if the
compiler uses this technique rather than the traditional one?