[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: bootstrap problem with union Lisp_Object

From: Ken Raeburn
Subject: Re: bootstrap problem with union Lisp_Object
Date: Thu, 8 Dec 2005 03:59:37 -0500

On Dec 7, 2005, at 23:54, Richard M. Stallman wrote:
    If people think this is a good idea, I could start changing those
macros that use eassert (XSET, XCONS, XVECTOR, ...) to have GCC and non-GCC versions, with the GCC versions using statement expressions
    (inline functions wouldn't preserve the file and line number) and
temporary variables, and error out if ENABLE_CHECKING is defined but GCC isn't used. Should be straightforward, about a dozen places or
    so to change I think.

Is this really necessary now?  I hope not.

No, but without such a thing -- or some other approach like replacing some of these macros with functions -- the ENABLE_CHECKING version of these macros will evaluate arguments more than once. As far as I know, most if not all of the actual uses are cases where this doesn't cause much trouble except perhaps for performance.


reply via email to

[Prev in Thread] Current Thread [Next in Thread]