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Re: c/9700: va_start gets __offset wrong in some situations
- From: Wolfgang Bangerth <bangerth at ticam dot utexas dot edu>
- To: Aron Griffis <agriffis at gentoo dot org>
- Cc: bangerth at dealii dot org, <bjb at gentoo dot org>, <gcc-bugs at gcc dot gnu dot org>, <msterret at coat dot com>, <wwoods at gentoo dot org>, <gcc-gnats at gcc dot gnu dot org>
- Date: Fri, 14 Feb 2003 20:29:14 -0600 (CST)
- Subject: Re: c/9700: va_start gets __offset wrong in some situations
On Fri, 14 Feb 2003, Aron Griffis wrote:
> bangerth@dealii.org wrote:[Fri Feb 14 2003, 09:10:12PM EST]
> > Admittedly I only looked at the program given in the first
> > report. So, let me ask again: I think that that program
> > does exactly what should be expected, is this right? If so,
> > the comment in that program about expectations is wrong.
>
> Ah, this is where we're not communicating. The comment is accurate. I
> can rephrase it as follows, perhaps this is more clear:
>
> /*
> * This is the first invocation of va_arg. The argument list is as
> * follows:
> *
> * a = 0
> * b = 0
> * c = 0
> * d = 0
> * e = 0
> * ap = { undef, undef }
> * first_custom = "one"
> * ... = "two", "three"
> *
> * Therefore va_arg should return "two". However in this example it
> * erroneously returns "one", which is first_custom.
> */
OK. It seems as if I misread it.
In any case, the program does as expected on my x86 linux machine. I can't
compile the second program on my machine, as you mention. So I assume that
this is something that is specific to the alpha port. I'll change the
synopsis accordingly, and leave this to the port maintainers.
Thanks for keeping me on track ;-)
Wolfgang
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Wolfgang Bangerth email: bangerth@ticam.utexas.edu
www: http://www.ticam.utexas.edu/~bangerth/