Date: Fri, 13 Mar 1998 09:25:27 -0800 (PST) From: Simon Shapiro <shimon@simon-shapiro.org> To: Peter Dufault <dufault@hda.com> Cc: current@FreeBSD.ORG Subject: Re: A question about sys/sys/queue.h Message-ID: <XFMail.980313092527.shimon@simon-shapiro.org> In-Reply-To: <199803131010.FAA01489@hda.hda.com>
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On 13-Mar-98 Peter Dufault wrote:
>> cute. Wonder what the compiled code looks like...
>
> This is a standard idiom safe to use around "ifs" etc without extra
> curly braces -
>
> if (test)
> this_macro_expands_ok();
>
> the generated code is fine even on some bad DSP and microcontroller
> compilers I use. I try to always use this.
I understand the code works. I was wondering about:
a. differences in actual object generated - I am assured that GCC is
knowledgable enough to remove the logically useless code.
b. The sanity of writing useless code, knowing it will be thrown out by or
frienfdly, thinking, machine, only to gain a `;' so something looks
like what it is not - I do admit to the somewhat more convineient look
of the sesultant code, although an inline function would have
accomplished the same thing while being semantically saner, but as it
works...
----------
Sincerely Yours,
Simon Shapiro
Shimon@Simon-Shapiro.ORG Voice: 503.799.2313
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