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From: "ebotcazou at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/28581] Illegal loading the address of a label with -O2
Date: Sun, 18 Nov 2007 08:46:00 -0000	[thread overview]
Message-ID: <20071118084643.27495.qmail@sourceware.org> (raw)
In-Reply-To: <bug-28581-5993@http.gcc.gnu.org/bugzilla/>



------- Comment #10 from ebotcazou at gcc dot gnu dot org  2007-11-18 08:46 -------
> The compiler is refusing to see the usage of labels as addresses in other
> places than "goto"s.  I think you call this "design". But one cant expect
> the code to produce different results with "optimization" enabled. This is
> against the definition of "optimization".

This is acceptable if the code is deemed invalid.

> It would be nice if you could include a fix for this. It even helps writing
> "self-modifying" code, you see. (apart from "goto"s). In fact that is when I
> hit this problem.

I agree that we should clarify the documentation if we definitely rule the
code as being invalid.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28581


  parent reply	other threads:[~2007-11-18  8:46 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-03  6:03 [Bug c/28581] New: " inaoka dot kazuhiro at renesas dot com
2006-08-03  6:07 ` [Bug c/28581] " inaoka dot kazuhiro at renesas dot com
2006-08-03 11:45 ` [Bug middle-end/28581] " pinskia at gcc dot gnu dot org
2006-08-08  0:33 ` pinskia at gcc dot gnu dot org
2007-11-16 19:58 ` pinskia at gcc dot gnu dot org
2007-11-17 11:50 ` sparc64 at rediffmail dot com
2007-11-17 20:36 ` pinskia at gcc dot gnu dot org
2007-11-18  6:41 ` sparc64 at rediffmail dot com
2007-11-18  7:25 ` sparc64 at rediffmail dot com
2007-11-18  7:28 ` sparc64 at rediffmail dot com
2007-11-18  8:46 ` ebotcazou at gcc dot gnu dot org [this message]
2007-11-18 14:44 ` sparc64 at rediffmail dot com
2007-11-18 16:05 ` steven at gcc dot gnu dot org
     [not found] <bug-28581-4@http.gcc.gnu.org/bugzilla/>
2021-07-21 16:15 ` schwab@linux-m68k.org
2024-03-16 18:09 ` pinskia at gcc dot gnu.org

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