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From: Falk Hueffner <falk.hueffner@student.uni-tuebingen.de> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: c/10226: unsigned short promotion with bitwise inversion Date: Wed, 26 Mar 2003 22:26:00 -0000 [thread overview] Message-ID: <20030326222600.1770.qmail@sources.redhat.com> (raw) The following reply was made to PR c/10226; it has been noted by GNATS. From: Falk Hueffner <falk.hueffner@student.uni-tuebingen.de> To: Glen Nakamura <glen@imodulo.com> Cc: Michael Marks <Michael.Marks@internetmachines.com>, gcc-gnats@gcc.gnu.org Subject: Re: c/10226: unsigned short promotion with bitwise inversion Date: 26 Mar 2003 23:19:58 +0100 Glen Nakamura <glen@imodulo.com> writes: > On Wed, Mar 26, 2003 at 10:39:43PM +0100, Falk Hueffner wrote: > > Indeed. Currently, it says: > > warning: comparison of promoted ~unsigned with unsigned > > Suggestion: > > warning: comparison of ~(promoted unsigned) with unsigned > > How about one of these: > warning: comparison of promoted ~unsigned with unsigned is always false > warning: comparison of ~(promoted unsigned) with unsigned is always false Yes, that makes it even clearer. I'd prefer the second variant. (BTW, funny, the optimizer doesn't seem to realize it's always false...) -- Falk
next reply other threads:[~2003-03-26 22:26 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-03-26 22:26 Falk Hueffner [this message] -- strict thread matches above, loose matches on Subject: below -- 2003-03-27 0:16 Michael Marks 2003-03-26 23:06 Falk Hueffner 2003-03-26 22:36 Glen Nakamura 2003-03-26 22:26 Glen Nakamura 2003-03-26 22:06 Michael Marks 2003-03-26 21:56 Glen Nakamura 2003-03-26 21:56 Falk Hueffner 2003-03-26 21:16 Michael Marks 2003-03-26 21:16 ebotcazou 2003-03-26 20:36 Glen Nakamura 2003-03-26 19:56 Michael Marks 2003-03-26 18:26 Falk Hueffner 2003-03-26 18:16 mmarks
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