Date: Wed, 22 Dec 2004 11:42:29 -0700 From: Scott Long <scottl@freebsd.org> To: "M. Warner Losh" <imp@bsdimp.com> Cc: arch@freebsd.org Subject: Re: Header files with enums instead of defines? Message-ID: <41C9C015.7050706@freebsd.org> In-Reply-To: <20041222.113411.76074974.imp@bsdimp.com> References: <20041222090855.GO79646@cirb503493.alcatel.com.au> <20041222103844.GI801@straylight.m.ringlet.net> <34cb7c8404122205002bd7de18@mail.gmail.com> <20041222.113411.76074974.imp@bsdimp.com>
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M. Warner Losh wrote: > In order to gain the benefits of the enums, errno would need to be an > enum errno_t or some such. This breaks C++ code that sets errno = 0, > since you can't assign integers to errno values. > > So even if you retained EBOGUS or whatever, this wouldn't work with > C++. errno has to be an int to work there. > > Warner I think you might have missed that nothing was actually being declared with the errno_t type, but rather the type was used as a cast for gdb. It's a neat trick, but still a little cumbersome unless gdb was taught about it or given some clever macros. Scott
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