On Fri, Sep 4, 2020 at 4:39 AM Gary Oblock via Gcc <gcc@gcc.gnu.org> wrote:
>
> Note, isn't a problem, rather, it's something that puzzles me.
>
> On walking a function types argument types this way
>
> for ( arg = TYPE_ARG_TYPES ( func_type);
> arg != NULL;
> arg = TREE_CHAIN ( arg))
> {
> .
> .
> }
>
> I noticed an extra void argument that didn't exist
> tagged on the end.
>
> I then noticed other code doing this (which I copied:)
>
> for ( arg = TYPE_ARG_TYPES ( func_type);
> arg != NULL && arg != void_list_node;
> arg = TREE_CHAIN ( arg))
> {
> .
> .
> }
>
> What is going on here???
Without a void_list_node on the end it's a variadic function
> Thanks,
>
> Gary
>
>
>
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