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* [Bug c++/23370] No error at -O1 for static const class member passed by reference
[not found] <bug-23370-8581@http.gcc.gnu.org/bugzilla/>
@ 2006-03-07 19:47 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-03-07 19:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2006-03-07 19:47 -------
*** Bug 26597 has been marked as a duplicate of this bug. ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |teufl at weyl dot math dot
| |tugraz dot at
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23370
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/23370] No error at -O1 for static const class member passed by reference
2005-08-13 4:12 [Bug c++/23370] New: " flash at pobox dot com
2005-08-13 4:13 ` [Bug c++/23370] " flash at pobox dot com
2005-08-13 4:19 ` flash at pobox dot com
@ 2005-08-13 6:42 ` pinskia at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-08-13 6:42 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-13 06:42 -------
Since the static const can be "inlined" at higher level of optimizations which is allowed by the C++
standard, this is not a bug.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23370
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/23370] No error at -O1 for static const class member passed by reference
2005-08-13 4:12 [Bug c++/23370] New: " flash at pobox dot com
2005-08-13 4:13 ` [Bug c++/23370] " flash at pobox dot com
@ 2005-08-13 4:19 ` flash at pobox dot com
2005-08-13 6:42 ` pinskia at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: flash at pobox dot com @ 2005-08-13 4:19 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From flash at pobox dot com 2005-08-13 04:18 -------
Here's the discussion in our developer forum about the validity of this code; the rejection was originally
reported as a bug against our compiler.
At 4:34 PM -0500 2/16/04, Stuart A. Malone wrote:
>But when I compile this kind of code using the native compiler, the
>linker complains that Foo::kVersionNumber is an undefined symbol.
>If I try to mollify it by placing code in my .cpp file like this:
>
> const int16_t Foo::kVersionNumber = 3;
>
>The compiler complains that the symbol has been defined twice.
>
>So how do I win?
I checked a reference manual[1] last night, which said that the
definition should be:
const int16_t Foo::kVersionNumber;
Keep the "= 3" in the class definition, like you did before. All
you're doing with the above line is telling the compiler and linker
where the storage should be defined.
-- Keith Rollin
-- Development Tools engineer
[1] "The C Programming Language", Special Edition, p. 249, section
10.4.6.2, "Member Constants", where it says "If (and only if) you use
an initialized member in a way that requires it to be stored as an
object in memory, the member must be (uniquely) defined somewhere.
The initializer may not be repeated: <example>".
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23370
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/23370] No error at -O1 for static const class member passed by reference
2005-08-13 4:12 [Bug c++/23370] New: " flash at pobox dot com
@ 2005-08-13 4:13 ` flash at pobox dot com
2005-08-13 4:19 ` flash at pobox dot com
2005-08-13 6:42 ` pinskia at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: flash at pobox dot com @ 2005-08-13 4:13 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From flash at pobox dot com 2005-08-13 04:13 -------
Created an attachment (id=9489)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9489&action=view)
Llamagrahpics_static_constant_by_ref.cpp
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23370
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2006-03-07 19:47 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-23370-8581@http.gcc.gnu.org/bugzilla/>
2006-03-07 19:47 ` [Bug c++/23370] No error at -O1 for static const class member passed by reference pinskia at gcc dot gnu dot org
2005-08-13 4:12 [Bug c++/23370] New: " flash at pobox dot com
2005-08-13 4:13 ` [Bug c++/23370] " flash at pobox dot com
2005-08-13 4:19 ` flash at pobox dot com
2005-08-13 6:42 ` pinskia at gcc dot gnu dot org
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