Re: Header files with enums instead of defines?

From: M. Warner Losh (imp_at_bsdimp.com)
Date: 12/22/04

  • Next message: M. Warner Losh: "Re: Header files with enums instead of defines?" 
    Date: Wed, 22 Dec 2004 11:48:35 -0700 (MST)
To: scottl@FreeBSD.org

    In message: <41C9C015.7050706@freebsd.org>
                Scott Long <scottl@freebsd.org> writes:
    : 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.

    Then why bother... Is typing something complex to gdb really better
    than "grep $number /usr/include/sys/errno.h"?

    Warner
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