Re: (C++) Where does offsetof come from?

--- Miloslav Trmac <[email protected]> wrote:

> Hello,
> On Sun, Jan 09, 2005 at 04:55:58PM -0800, exits
> funnel wrote:
> > I'm trying to figure out where the offsetof macro
> is
> > defined?
> <stddef.h>, so <cstddef> for C++
> 
> > The only one I can find is
> > in /usr/include/linux/stddef.h but (A) according
> to
> > the output of g++ -v, this directory isn't in my
> > include path
> You have apparently not looked in /usr/lib/gcc/...

Thanks for taking the time to reply.  Okay, so there
are the following three copies of cstddef on my
system:

/usr/include/g++-3/cstddef
/usr/include/c++/3.2.3/cstddef
/lib/ssa/gcc-lib/i386-redhat-linux-gnu/3.5-tree-ssa/include/c++/cstddef

but I'm not explicitly #including any of them and
still offsetof is defined.  I guess one of them is
included recursively by iostream.h?

Thanks.

-exits


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