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From: Martin Krischik <krischik@users.sourceforge.net>
Newsgroups: comp.arch.embedded,comp.lang.ada
Subject: Re: Certified C compilers for safety-critical embedded systems
Followup-To: comp.arch.embedded,comp.lang.ada
Date: Tue, 30 Dec 2003 11:04:54 +0100
Organization: AdaCL
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Date: 2003-12-30T11:04:54+01:00
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Frank J. Lhota wrote:

> "Chris Hills" <chris@phaedsys.org> wrote in message
> news:11LvOkBBXw7$EAJw@phaedsys.demon.co.uk...
>> [plain] char is a character
>> singed and unsigned char are integer types.
> 
> "singed" char? Perhaps there is a distinction between sung and unsung
> chars.

Grin.

Well in C you can have signed char where char'Pos is range -128 .. +127 and
unsigned char where char'Pos ist 0 .. 255. One of the top 10 mistakes K&R
did. It leads to a lot of misunderstandings and signed char is only used
when Short_Short_Integer is needed.

Which is yet another example where in C you have to say "A" when realy you
want "B". How a static analysis tool will deal with this I never know. 

With Regards

Martin

-- 
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