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From: jon@oddhack.Caltech.Edu (Jon Leech)
Newsgroups: comp.lang.c++
Subject: Constant expressions
Message-ID: <1252@cit-vax.Caltech.Edu>
Date: Sun, 30-Nov-86 04:19:03 EST
Article-I.D.: cit-vax.1252
Posted: Sun Nov 30 04:19:03 1986
Date-Received: Sun, 30-Nov-86 19:41:01 EST
Sender: news@cit-vax.Caltech.Edu
Reply-To: jon@cit-vax.UUCP (Jon Leech)
Organization: California Institute of Technology
Lines: 15


	I recently found that C++ (1.1) does not allow integral casts in
constant expressions in some cases; for example,

	const int i = (unsigned)1;	// Is legal

	typedef enum { one = (unsigned)1 } ENUM;	// Is not.

Unfortunately, this makes it impossible to include some of the graphics header
files on Suns which use the latter form (it also happens to disagree with 
the ANSI C draft, sadly).  Has anyone got a fix for this problem?

    -- Jon Leech (jon@csvax.caltech.edu || ...seismo!cit-vax!jon)
    Caltech Computer Science Graphics Group
    __@/