Path: csiph.com!eternal-september.org!feeder.eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: Compiling and linking code from different places in the file system
Date: Thu, 08 Mar 2018 09:58:15 -0800
Organization: None to speak of
Lines: 31
Message-ID: <lnina6e9fs.fsf@kst-u.example.com>
References: <p793c8$7d8$1@dont-email.me> <slrnp9h0lc.eu5.grahn+nntp@frailea.sa.invalid> <p7e47k$sua$1@dont-email.me> <slrnp9n8ll.eu5.grahn+nntp@frailea.sa.invalid> <bc4352bf-5ec2-4d47-9c47-22e261ea51f2@googlegroups.com> <6oSnC.178019$eQ7.108635@fx46.am4> <87o9k055d2.fsf@bsb.me.uk> <lxUnC.79953$zk1.77648@fx03.am4> <afce8849-eec5-4828-b141-3df0a9f7bb3b@googlegroups.com> <lny3j3eoxy.fsf@kst-u.example.com> <13a67039-e46b-4337-a1a3-058210e55b6e@googlegroups.com> <lntvtreju5.fsf@kst-u.example.com> <ba477256-00f2-4aaa-bb37-05c93ecc5422@googlegroups.com> <p7r0t0$tud$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Injection-Info: reader02.eternal-september.org; posting-host="d5db3c990c5a8317a11173691196aced"; logging-data="24717"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX199Iu7WC4ET7pArXmZ8Lcfx"
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)
Cancel-Lock: sha1:aNXh+tgruXd25HEtU+IRyj6qKts= sha1:6z2t79wUFk8amhY7vx85XlrWeWQ=
Xref: csiph.com comp.lang.c:127488

David Brown <david.brown@hesbynett.no> writes:
[...]
> And then name one where you could not do this to get valid int32_t and
> uint32_t types:
>
> #include <limits.h>
>
> #if INT_MIN == -2147483647
> typedef int int32_t;
> typedef unsigned int uint32_t;
> #elif LONG_MIN == -2147483647
> typedef long int int32_t;
> typedef unsigned long int uint32_t;
> #elif SCHAR_MIN == -2147483647
> typedef signed char int32_t;
> typedef unsigned char uint32_t;
> #else
> #error No support for 32-bit sized types
> #endif

You mean -2147483648, not -2147483647.  And the expression -2147483648
can be problematic.  I'd check the value of INT_MAX (and I'd likely use
0x7fffffff because it's easier to see typos).

[...]

-- 
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"