prototype question

[rich at inmet.inmet.com]

I misplaced my copy of the ANSI Draft.  What is the latest rule on
prototype checking in the following case:

	int fn(int);

	int fn(c)
		char c;
		{
		}

Plum Hall 1.09 says this is legal.  Is it still so?

	uunet!inmet!rich
	Richard Man