Path: utzoo!mnetor!uunet!husc6!cmcl2!rutgers!rochester!PT.CS.CMU.EDU!K.GP.CS.CMU.EDU!jgm
From: jgm@K.GP.CS.CMU.EDU (John Myers)
Newsgroups: comp.lang.c
Subject: Re: Pragmas
Message-ID: <579@PT.CS.CMU.EDU>
Date: 2 Jan 88 20:06:44 GMT
References: <8801021358.AA15890@decwrl.dec.com>
Sender: netnews@PT.CS.CMU.EDU
Organization: System/Technology Development Corp.
Lines: 17

In article <8801021358.AA15890@decwrl.dec.com> minow@thundr.dec.com (Martin Minow THUNDR::MINOW ML3-5/U26 223-9922) writes:
>According to the Draft Standard, unknown pragmas are to be ignored
>(section 3.8.6 of the Aug. '87 draft).  Because it doesn't distinguish
>mistakes from typographical errors, this is a mistake, and one that the
>Committee seems inordinately fond of: they rejected my request to
>flag unknown pragmas as errors.
>
>The Gnu compiler "recognizes" all pragmas, causing them to run Towers
>of Hanoi to a depth of 64. This is proper usage per the Draft Standard.
> 
Unfortunately, this feature of the Gnu C preprocessor went away in the
latest version, 1.16.  It now passes #pragma statements through untouched.

Actually, a conformant compiler could "recognize" all pragmas not otherwise
defined by the compiler as a command to issue an error.

				_.John G. Myers