* [Bug c++/8057] [3.3/3.4 regression] Templates/non-templates and warnings about statements without effects
[not found] <20020926115600.8057.bangerth@ticam.utexas.edu>
@ 2003-06-08 18:50 ` pinskia@physics.uc.edu
2003-06-09 15:54 ` giovannibajo@libero.it
` (8 subsequent siblings)
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From: pinskia@physics.uc.edu @ 2003-06-08 18:50 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8057
pinskia@physics.uc.edu changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |3.3.1
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[not found] <20020926115600.8057.bangerth@ticam.utexas.edu>
2003-06-08 18:50 ` [Bug c++/8057] [3.3/3.4 regression] Templates/non-templates and warnings about statements without effects pinskia@physics.uc.edu
@ 2003-06-09 15:54 ` giovannibajo@libero.it
2003-07-07 16:04 ` gdr at gcc dot gnu dot org
` (7 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: giovannibajo@libero.it @ 2003-06-09 15:54 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8057
giovannibajo@libero.it changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned@gcc.gnu.org |gdr@gcc.gnu.org
------- Additional Comments From giovannibajo@libero.it 2003-06-09 15:54 -------
Assigned to diagnostic mantainer.
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug c++/8057] [3.3/3.4 regression] Templates/non-templates and warnings about statements without effects
[not found] <20020926115600.8057.bangerth@ticam.utexas.edu>
2003-06-08 18:50 ` [Bug c++/8057] [3.3/3.4 regression] Templates/non-templates and warnings about statements without effects pinskia@physics.uc.edu
2003-06-09 15:54 ` giovannibajo@libero.it
@ 2003-07-07 16:04 ` gdr at gcc dot gnu dot org
2003-07-07 16:25 ` pinskia at physics dot uc dot edu
` (6 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: gdr at gcc dot gnu dot org @ 2003-07-07 16:04 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8057
gdr at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mark at codesourcery dot com
AssignedTo|gdr at gcc dot gnu dot org |unassigned at gcc dot gnu
| |dot org
Status|NEW |ASSIGNED
------- Additional Comments From gdr at gcc dot gnu dot org 2003-07-07 16:04 -------
This PR has nothing to do with diagnostics per se. The diagnostic thing is just
a symptom of a much fuhndamental desease: It has to do with function cloning and
inlining. More specifically, the double emission of diagnostic is due to the
fact that the constructor is cloned, hence its body is expanded twice.
The absence of diagnostic in Z::Z() is due to the fact that it is an inline
function and starting from some GCC-3.x, an inline function is defined (hence
its body expanded) only if used. To see what I mean, make the definition of
Z::Z() a non-inline function and you'll see the warning.
If you add the following
struct A {
void f();
};
void
A::f() { Y::i; }
you'll see that the diagnostic is emitted only once.
So, this issue has nothing to do with templates per se. It all has to do with
cloning and inlining. So I'll hand it off.
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[not found] <20020926115600.8057.bangerth@ticam.utexas.edu>
` (2 preceding siblings ...)
2003-07-07 16:04 ` gdr at gcc dot gnu dot org
@ 2003-07-07 16:25 ` pinskia at physics dot uc dot edu
2003-07-10 6:44 ` mmitchel at gcc dot gnu dot org
` (5 subsequent siblings)
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From: pinskia at physics dot uc dot edu @ 2003-07-07 16:25 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
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pinskia at physics dot uc dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
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2003-07-07 16:25 ` pinskia at physics dot uc dot edu
@ 2003-07-10 6:44 ` mmitchel at gcc dot gnu dot org
2003-12-29 17:46 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
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From: mmitchel at gcc dot gnu dot org @ 2003-07-10 6:44 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
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mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.3.1 |3.4
------- Additional Comments From mmitchel at gcc dot gnu dot org 2003-07-10 06:44 -------
Actually, the real problem here is that we use the middle-end to issue
diagnostics that need to be emitted from the front end. I've sermonized on this
before: the idea of using the optimizers to detect unused/uninitialized/etc.
variables *sounds* good -- but it leads to all these very real usability
problems, which is why no other compiler does it this way. There is nothing
that can be done to fix this problem with our current infrastructure, so this is
going to have to wait until (at least) GCC 3.4.
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[not found] <20020926115600.8057.bangerth@ticam.utexas.edu>
` (4 preceding siblings ...)
2003-07-10 6:44 ` mmitchel at gcc dot gnu dot org
@ 2003-12-29 17:46 ` pinskia at gcc dot gnu dot org
2004-01-10 23:21 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-12-29 17:46 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |minor
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8057
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[not found] <20020926115600.8057.bangerth@ticam.utexas.edu>
` (5 preceding siblings ...)
2003-12-29 17:46 ` pinskia at gcc dot gnu dot org
@ 2004-01-10 23:21 ` pinskia at gcc dot gnu dot org
2004-01-12 23:39 ` steven at gcc dot gnu dot org
` (2 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-01-10 23:21 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-01-10 23:21 -------
This is regression from 2.95.3 so moving to 3.4.1 and this should not block the branch.
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.4.0 |3.4.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8057
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[not found] <20020926115600.8057.bangerth@ticam.utexas.edu>
` (6 preceding siblings ...)
2004-01-10 23:21 ` pinskia at gcc dot gnu dot org
@ 2004-01-12 23:39 ` steven at gcc dot gnu dot org
2004-01-31 3:09 ` [Bug c++/8057] [3.3/3.4/3.5 " mmitchel at gcc dot gnu dot org
2004-12-22 4:58 ` [Bug c++/8057] [3.3/3.4/4.0 " mmitchel at gcc dot gnu dot org
9 siblings, 0 replies; 10+ messages in thread
From: steven at gcc dot gnu dot org @ 2004-01-12 23:39 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From steven at gcc dot gnu dot org 2004-01-12 23:39 -------
Move back the target for all regressions from 3.4.1 to 3.4.0, as required by
our bug management policy.
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.4.1 |3.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8057
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[not found] <20020926115600.8057.bangerth@ticam.utexas.edu>
` (7 preceding siblings ...)
2004-01-12 23:39 ` steven at gcc dot gnu dot org
@ 2004-01-31 3:09 ` mmitchel at gcc dot gnu dot org
2004-12-22 4:58 ` [Bug c++/8057] [3.3/3.4/4.0 " mmitchel at gcc dot gnu dot org
9 siblings, 0 replies; 10+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-01-31 3:09 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-01-31 03:09 -------
My comments about lack of infrastructure for fixing this bug still apply.
Postponing until at least GCC 3.5.
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.4.0 |3.5.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8057
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` (8 preceding siblings ...)
2004-01-31 3:09 ` [Bug c++/8057] [3.3/3.4/3.5 " mmitchel at gcc dot gnu dot org
@ 2004-12-22 4:58 ` mmitchel at gcc dot gnu dot org
9 siblings, 0 replies; 10+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-12-22 4:58 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-12-22 04:58 -------
We still have no viable mechanism for fixing this bug. Postponing until GCC 4.1.
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.0.0 |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8057
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