Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!linus!philabs!cmcl2!seismo!umcp-cs!chris
From: chris@umcp-cs.UUCP (Chris Torek)
Newsgroups: net.lang.c,net.micro.pc,net.unix-wizards
Subject: Re: Varargs, portability
Message-ID: <1786@umcp-cs.UUCP>
Date: Tue, 3-Jun-86 04:22:26 EDT
Article-I.D.: umcp-cs.1786
Posted: Tue Jun  3 04:22:26 1986
Date-Received: Wed, 4-Jun-86 19:26:45 EDT
References: <8049@cca.UUCP> <5576@alice.uUCp>
Organization: Computer Sci. Dept, U of Maryland, College Park, MD
Lines: 14
Xref: linus net.lang.c:8502 net.micro.pc:8110 net.unix-wizards:15205

In article <5576@alice.uUCp>, ark@alice.UucP (Andrew Koenig) writes:
>... Most C compilers on the VAX use the built-in subroutine
>instructions for C subroutines.  These instructions limit the argument
>list to 255 words.

If you refer to the fact that the `ret' instruction will pop at most
1023 bytes from the stack, well, gawsh, Robert Elz and someone whose
initials are `wah' had that fixed a long time ago (4.1BSD?) . . . .
It is not hard to work around: just generate an `extra' `addl2' after
a subroutine call that pushes that much data.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 1516)
UUCP:	seismo!umcp-cs!chris
CSNet:	chris@umcp-cs		ARPA:	chris@mimsy.umd.edu