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From: Fergus Henderson <fjh@cs.mu.oz.au>
To: dewar@gnat.com (Robert Dewar)
Cc: bernds@redhat.com, gcc@gcc.gnu.org
Subject: Re: forcing tail/sibling call optimization
Date: Sun, 26 Nov 2000 13:51:00 -0000	[thread overview]
Message-ID: <20001127085140.B487@hg.cs.mu.oz.au> (raw)
In-Reply-To: <20001126162142.14A3D34D83@nile.gnat.com>

On 26-Nov-2000, Robert Dewar <dewar@gnat.com> wrote:
> >       Implementations shall issue a warning if there are any tail call
> >       statements for which the implementation is unable to follow
> >       the implementation advice.
> 
> Are there precedents in either ANSI C or GNU C for requiring warnings.

In ANSI/ISO C: no.  But the ANSI/ISO C standard is not a good model
for how to write specifications.

In GNU C: yes.  For example, many parts of the GNU C manual say
that if a certain option is enabled, the compiler will issue
certain warnings.  If the GNU C manual is treated as a specification,
these parts of the manual are definitely requirements on the compiler.

-- 
Fergus Henderson <fjh@cs.mu.oz.au>  |  "I have always known that the pursuit
                                    |  of excellence is a lethal habit"
WWW: < http://www.cs.mu.oz.au/~fjh >  |     -- the last words of T. S. Garp.

  reply	other threads:[~2000-11-26 13:51 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-11-26  8:21 Robert Dewar
2000-11-26 13:51 ` Fergus Henderson [this message]
  -- strict thread matches above, loose matches on Subject: below --
2000-11-29  4:58 Robert Dewar
2000-11-27 15:33 Mike Stump
2000-11-27 10:04 Robert Dewar
2000-11-27  9:39 Geert Bosch
2000-11-27 12:06 ` Jeffrey A Law
2000-11-27  9:08 Robert Dewar
2000-11-27  9:14 ` Bernd Schmidt
2000-11-27 10:09   ` Michael Matz
2000-11-27  8:44 Robert Dewar
2000-11-27  9:44 ` Jeffrey A Law
2000-11-27 10:22   ` Mark Probst
2000-11-27 14:42     ` Harvey J. Stein
2000-11-27 16:07       ` Mark Probst
2000-11-27 14:30   ` Harvey J. Stein
2000-11-26 18:09 Robert Dewar
2000-11-26 15:46 Robert Dewar
2000-11-26 16:21 ` Joseph S. Myers
2000-11-26 18:08 ` Fergus Henderson
2000-11-26 21:50 ` Jeffrey A Law
2000-11-26 15:27 Robert Dewar
2000-11-26 17:56 ` Fergus Henderson
2000-11-26 10:59 Timothy J. Wood
2000-11-26  9:12 Geert Bosch
2000-11-26  8:14 Robert Dewar
2000-11-26 13:43 ` Fergus Henderson
2000-11-27  7:58 ` Jeffrey A Law
2000-11-27  8:05   ` David Edelsohn
2000-11-27  8:07   ` Andi Kleen
2000-11-27  8:25     ` Jeffrey A Law
2000-11-27  8:39       ` Andi Kleen
2000-11-27  9:48         ` Jeffrey A Law
2000-11-27 11:21           ` Lars Brinkhoff
2000-11-27 10:54         ` Mark Mitchell
2000-11-27  8:38     ` Bernd Schmidt
2000-11-27 11:26       ` Eric W. Biederman
2000-11-27 10:48     ` Mark Mitchell
2000-11-27 12:46       ` Harvey J. Stein
2000-11-27 13:02         ` Travis Moulton
2000-11-27 10:47   ` Mark Mitchell
2000-11-28 19:21     ` Fergus Henderson
2000-11-29  2:09       ` Mark Mitchell
2000-11-30 23:59         ` Fergus Henderson
2000-12-01 15:51           ` Joe Buck
2001-01-03 12:24             ` Fergus Henderson
2001-01-03 13:09               ` Richard Henderson
2001-01-03 14:59                 ` Fergus Henderson
2001-01-03 15:32                   ` Richard Henderson
2001-01-03 15:53                     ` Fergus Henderson
2001-01-03 16:11                       ` Richard Henderson
2001-01-03 16:36                         ` Fergus Henderson
2002-09-14 23:35                   ` Fergus Henderson
2002-09-16  9:26                     ` Richard Henderson
2000-11-27 23:39   ` Fergus Henderson
2000-11-26  5:00 Robert Dewar
2000-11-26  7:44 ` Fergus Henderson
2000-11-26  8:18   ` Bernd Schmidt
2000-11-26  9:55   ` Andi Kleen
2000-11-26 11:34   ` Per Bothner
2000-11-26 11:55     ` Mark Probst
2000-11-26 17:40     ` Fergus Henderson
2000-11-26  3:56 Fergus Henderson
2000-11-26  5:22 ` Mark Probst

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