[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: standards/46276: CHAR_MAX/CHAR_MIN don't change with -funsigned-char
The following reply was made to PR standards/46276; it has been noted by GNATS.
From: Klaus Klein <kleink%kleink.org@localhost>
Subject: Re: standards/46276: CHAR_MAX/CHAR_MIN don't change with
Date: Wed, 28 Mar 2012 22:10:10 +0200
On Wed, Mar 28, 2012 at 06:35:02PM +0000, David Holland wrote:
> uwe says gcc provides __CHAR_UNSIGNED__ to test with.
Which I'd rather use.[*]
> In both gcc 4.1 and 4.5 the "#if ('7' - '8') < 0" test can be used to
> determine if char is unsigned, but there is still a question as to
> whether this is correct gcc behavior.
This would be implementation-defined; cpp.info documents this
particular choice of behavior.
[*] For arguably being the lesser of two implementation-defined evils...
Main Index |
Thread Index |