From Albert Chin: the HP-UX 10.20 C compiler doesn't allow

From Albert Chin: the HP-UX 10.20 C compiler doesn't allow

	typedef enum _foo foo;
	enum _foo {
		...
	};

You have to define the enum before using it in a typedef.  (If I had my
ANSI C89 standard handy, I could say whether that was legal ANSI C or
not.)

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