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From: comeau@panix.com (Greg Comeau)
Newsgroups: comp.lang.ada,comp.lang.c,comp.lang.c++
Subject: Re: How Ada could have prevented the Red Code distributed denial of
      service attack.
Date: 16 Aug 2001 18:23:50 -0400
Organization: Comeau Computing; http://www.comeaucomputing.com
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Xref: archiver1.google.com comp.lang.ada:12019 comp.lang.c:74865
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Date: 2001-08-16T22:23:50+00:00
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In article <Pine.GSO.4.33.0108161431560.15612-100000@longmorn.cisco.com>,
Karthik Gurusamy  <karthikg@cisco.com> wrote:
>If I have
> char title[] = "hello world!";
>
>Is sizeof title guaranteed to be 13 (strlen("hello world!) + 1)?

Assuming we're talking about Standard C or Standard C++
and assuming we're talking about the exact code sample above,
then that's the semantics each apply to the above.

>Can it ever happen sizeof title is more than 13?

Not according to Standard C or Standard C++.

Broken compilers, or compiler with extensions are another matter,
though that said, I haven't seen any getting this wrong.

BTW, there is no "identity" that sizeof "SomeChars"
is the same as strlen("SomeChar")+1, because it may contain
null bytes.
-- 
Greg Comeau                 Countdown to "export": December 1, 2001
Comeau C/C++ ONLINE ==>     http://www.comeaucomputing.com/tryitout
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