[cfe-dev] PATCH: Cleanup function redeclaration representations

[Doug Gregor]

Hi John,

On Thu, Apr 24, 2008 at 8:57 AM, John Freeman <freeman1 at gmail.com> wrote:
> However, I'm curious if his approach would be able to handle this:
>
> void f(int x = 2); // #1
>
> void f(int x); // #2
>  void g() { f(); } // need to see the default argument from declaration #1

Yes, it does. Default arguments from previous declarations get merged
into subsequent declarations. That's why one can write strange things
like:

  void f(int x, int y = 2);
  void f(int x = 1, int y);

That second declaration looks like nonsense, but it works because the
first declaration has a default argument for the second function
parameter.

  - Doug