Re: Double-underline-itis

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From	Keith Thompson <kst-u@mib.org>
Newsgroups	comp.lang.c
Subject	Re: Double-underline-itis
Date	Wed, 01 Mar 2017 09:30:23 -0800
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BartC <bc@freeuk.com> writes:
[...]
> I've just come across __signed__! How many C systems don't support 'signed'?
>
>     typedef __signed__ char __s8;
>     typedef unsigned char __u8;
[...]

The "signed" keyword and the signed char type were, IIRC, introduced
by ANSI C in 1989.  A header designed to work with both pre-ANSI
and ANSI C would have to have some way of dealing with that.  And
since the header still works even with C11 (as long as __signed__
is defined properly), there's not much motivation to fix it --
unless you wrongly assume that headers are intended as end user
documentation.

The use of __s8 and __u8, rather than the standard int8_t and
uint8_t, already implies that this is from an old legacy header.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

Thread

Double-underline-itis BartC <bc@freeuk.com> - 2017-02-28 23:44 +0000
  Re: Double-underline-itis supercat@casperkitty.com - 2017-02-28 15:54 -0800
  Re: Double-underline-itis Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-01 01:19 +0000
    Re: Double-underline-itis David Brown <david.brown@hesbynett.no> - 2017-03-01 09:11 +0100
    Re: Double-underline-itis BartC <bc@freeuk.com> - 2017-03-01 11:45 +0000
      Re: Double-underline-itis Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-01 12:30 +0000
        Re: Double-underline-itis BartC <bc@freeuk.com> - 2017-03-01 13:04 +0000
          Re: Double-underline-itis Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-03-01 15:29 +0000
            Re: Double-underline-itis gazelle@shell.xmission.com (Kenny McCormack) - 2017-03-01 15:47 +0000
          Re: Double-underline-itis Keith Thompson <kst-u@mib.org> - 2017-03-01 09:30 -0800
            Re: Double-underline-itis supercat@casperkitty.com - 2017-03-01 10:14 -0800
            Re: Double-underline-itis Tim Rentsch <txr@alumni.caltech.edu> - 2017-04-16 18:45 -0700

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