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From: info-vax@ucbvax.ARPA
Newsgroups: fa.info-vax
Subject: DEC C copies args
Message-ID: <4906@ucbvax.ARPA>
Date: Mon, 18-Feb-85 16:49:54 EST
Article-I.D.: ucbvax.4906
Posted: Mon Feb 18 16:49:54 1985
Date-Received: Tue, 19-Feb-85 04:42:32 EST
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 16

From: FIRTH@TL-20B.ARPA

The "feature" that DEC C copies any func arg you take the address of
should not be simply removed.  It is needed to enforce the VAX standard
calling convention, in particular, the rule that actual args are read only.

Without that convention, inter-language calling won't work.

However, just to copy the ONE arg that is addressed is certainly a bug,
since C requires the args to be contiguous.

The correct fix is that, if ANY arg has its address taken, the WHOLE
arglist should be copied down into local storage.

Robert Firth
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