From: Erik Faye-Lund Date: Mon, 17 Aug 2009 17:26:19 GMT Subject: Re: [PATCH 05/11] Remove va_copy at MSVC because there are va_copy. Message-ID: <40aa078e0908171026h4a92d249u4e2b560e01696303@mail.gmail.com> In-Reply-To: <40aa078e0908171002j4b610fe4j34a4e7d3081a9efa@mail.gmail.com> On Mon, Aug 17, 2009 at 7:02 PM, Erik Faye-Lund wrote: > Are you sure va_copy is always a preprocessor symbol? According to the following forum-post we are: http://www.velocityreviews.com/forums/showpost.php?p=1689162&postcount=2 However, I decided to dig a bit further, so I had a look at the public draft spec at http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf, section 7.15.1: "The va_start and va_arg macros described in this subclause shall be implemented as macros, not functions. It is unspecified whether va_copy and va_end are macros or identifiers declared with external linkage." I don't have access (that I know of) to the finalized spec, but it looks sketchy to me to depend on va_copy being implemented as a macro given this wording. -- Erik "kusma" Faye-Lund kusmabite@gmail.com (+47) 986 59 656