Date: Wed, 28 Jun 1995 05:59:48 +1000 From: Bruce Evans <bde@zeta.org.au> To: hackers@freebsd.org, hoppy@appsmiths.com Subject: Re: varargs.h / stdargs.h trouble Message-ID: <199506271959.FAA21846@godzilla.zeta.org.au>
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>It seems that varargs.h and stdargs.h in the distribution do not permit >vararg handling for anything smaller than an int. The macros simply call >abort, which is not the desired behavior. FreeBSD-2.x has the macros from 4.4lite. The behavior of va_start() in <stdarg.h> is undefined if the type of the arg isn't compatible with the type that results after the application of the default argument promotions (ISO C Standard 7.8.1.1). There is no standard for <varargs.h>. >For now, I scarfed the ones that came with the gcc-2.6.2, and they work, but >I'm wonding if some repair is needed to the ones in /usr/include/sys. The <stdarg.h> in gcc-2.6.2 begins with a comment saying that va_arg(..., short) is not valid. I think older versions of gcc's <stdarg.h> went to more trouble to make it work. Bruce
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