GNU bug report logs - #46847
28.0.50; [native-comp] assume pseudo-insns should be verified

Previous Next

Full log

View this message in rfc822 format

From: Andrea Corallo <akrl <at> sdf.org>
To: Pip Cet <pipcet <at> gmail.com>
Cc: 46847 <at> debbugs.gnu.org
Subject: bug#46847: 28.0.50; [native-comp] assume pseudo-insns should be verified
Date: Fri, 05 Mar 2021 19:36:57 +0000

Pip Cet <pipcet <at> gmail.com> writes:

> On Mon, Mar 1, 2021 at 1:08 PM Pip Cet <pipcet <at> gmail.com> wrote:
>> I would like to add an optional compiler pass which asserts that the
>> conditions are actually true at runtime. This is a basic safeguard
>> that any assume() mechanism should have, and it's perfectly equivalent
>> to the way eassume() becomes eassert() in debug builds of Emacs.
>
> I've proceeded to change things so I can assert assumes, and here's an
> incomplete list of the bugs I've found so far:
>
> Function types:
> 1. append has type (function (&rest t) t), not (function (&rest list) list)
> 2. aref has type (function (t fixnum) t), not (function (array fixnum) t)
> 3. bool-vector-count-consecutive has type (function (bool-vector
> boolean integer) fixnum), not (function (bool-vector bool-vector
> integer) fixnum))
> 4. at least some of the frame-* functions accept nil parameters
> 5. intern-soft has type (function ((or string symbol) &optional
> vector) symbol), not (function (string &optional vector) symbol)
> 6. length has type (function (t) integer), not (function (sequence) integer)
> 7. at least some of the minibuffer functions can return nil as well as a window.
> 8. nthcdr has type (function (integer t) t), not (function (integer list) list)
> 9. radians-to-degrees is a macro and probably shouldn't have a function type
> 10. string has type (function (&rest fixnum) string), not (function
> (&rest fixnum) strng)
> 11. user-full-name has type (function (&optional integer) (or string
> null)), not (function (&optional integer) string)

> Predicate types:
> 1. functionp isn't equivalent to (or function symbol)

Thanks, patches are welcome.

  Andrea

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.