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Date: Mon, 13 Jul 2009 21:00:17 -0700
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Subject: Re: [9fans] C compiler question
From: Russ Cox <rsc@swtch.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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> Yes, but in my example - sorry - "NeverDefined" doesn't mean "declared and
> defined elsewhere (or not)" but "not declared .and. not defined".

no and yes.

union U
{
  struct
  {
        struct NeverDefined  nf;              //  Unknown, definition
not #included
  } S1
};

declares a struct named NeverDefined just by mentioning it.
the compiler should reject the use because NeverDefined
is not defined.  it's just a bug.  i don't have a copy of the
compiler to play with but erik's patch seems fine.

russ