lots of questions (va_list, embedded perl, cvsd, introduction - sort of)

[Michael Schmitz]

> okay, so to the real meat of this post. ive been having some problems with
> the opennap server. i find that the va_list functions (primarily v*printf)
> are giving me segfaults and data corruption. this, however, is *not*

Make sure you are using __va_copy to copy va_list arguments. Plus do
not expect a va_list argument to remain unchanged in the calling routine
even though you pass the va_list argument by value.

> happening on an x86 bsd machine. i have limited machines to test this on,

x86 uses a different mechanism for va_lists, which is more tolerant :-(

>     va_start (ap, fmt); vsnprintf ( buf, 1022, fmt, ap ); va_end (ap);

The va_end does nothing here...

#define va_end(AP)	((void)0)

>     va_start (ap, fmt); vprintf ( fmt, ap ); va_end (ap);

and the second va_start should just restore the initial state of ap from
the stack. Looks like it should work...

	Michael


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