Date: Mon, 7 Jan 2002 17:20:06 +0000 (GMT) From: Doug Rabson <dfr@nlsystems.com> To: Dan Eischen <eischen@vigrid.com> Cc: <arch@freebsd.org> Subject: Re: Request for review: getcontext, setcontext, etc Message-ID: <Pine.BSF.4.33.0201071717510.94490-100000@herring.nlsystems.com> In-Reply-To: <3C39A340.81AD7F4C@vigrid.com>
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On Mon, 7 Jan 2002, Dan Eischen wrote: > Doug Rabson wrote: > > The other difference with the linux version is that it uses va_arg(ap, > > long) to read the arguments instead of va_arg(ap, int) which makes it > > possible to pass 64bit arguments. The SUSv2 spec document does seem to > > suggest that the arguments must be integers which makes the linux > > behaviour wrong although its probably more useful than truncating > > everything to 32bits. > > Well, even the new IEEE ratified POSIX spec suggests the parameters > are integers: > > "The application shall ensure that the value of argc matches > the number of integer arguments passed to func; otherwise, > the behavior is undefined." > > I don't care; if you want to use long arguments, I can change it... Hmm. It says 'integer' not 'int' which seems to allow some flexibility. I think it probably does intend 'int' but that makes it pretty useless for passing pointers etc. In my opinion the arguments should 'uintptr_t' or similar. -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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