Re: RDP on Minix-386

ok@cs.rmit.edu.au (Richard A. O'Keefe)
30 Jan 1997 22:34:31 -0500

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RDP on Minix-386 fjs@mail.netacc.net (1997-01-26)
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Re: RDP on Minix-386 ok@cs.rmit.edu.au (1997-01-30)
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From: ok@cs.rmit.edu.au (Richard A. O'Keefe)
Newsgroups: comp.os.minix,comp.compilers
Date: 30 Jan 1997 22:34:31 -0500
Organization: Comp Sci, RMIT, Melbourne, Australia
References: 97-01-217
Keywords: C

fjs@mail.netacc.net (Fred Joseph Scipione) writes:
>One of the porting challenges was when the ACK compiler protested that
>some functions were called with more arguments than its limit.
>Although I have gotten past that problem, I am curious to know if I am
>correct in the assumption that the ANSI spec. explicitly permits a
>limit for the number of arguments to a variadic function? If so, I
>can report the problem as a legitimate "bug" which needs my fix :-).


5.2.4.1 Translation limits
      ...
      -- 31 arguments in one function call.


The C standard does indeed explicitly give a limit for the number
of arguments to *any* call. If the ACK compiler accepts 31 arguments
and rejects 32, it is within its rights, and you should thank it for
telling you about a portability problem in the code.


--
Richard A. O'Keefe; http://www.cs.rmit.edu.au/%7Eok; RMIT Comp.Sci.
--

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