* [Bug c++/58999] sizeof ...(T) is very slow than clang
[not found] <bug-58999-4@http.gcc.gnu.org/bugzilla/>
@ 2013-11-05 9:08 ` khurshid.normuradov at gmail dot com
2013-11-05 10:51 ` vhaisman at gmail dot com
` (3 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: khurshid.normuradov at gmail dot com @ 2013-11-05 9:08 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58999
khurshid <khurshid.normuradov at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://stackoverflow.com/qu
| |estions/19783205/why-sizeof
| |-t-so-slow-implement-c14-ma
| |ke-index-sequence-without-s
| |izeof?noredirect=1#comment2
| |9408465_19783205
--- Comment #1 from khurshid <khurshid.normuradov at gmail dot com> ---
http://stackoverflow.com/questions/19783205/why-sizeof-t-so-slow-implement-c14-make-index-sequence-without-sizeof
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug c++/58999] sizeof ...(T) is very slow than clang
[not found] <bug-58999-4@http.gcc.gnu.org/bugzilla/>
2013-11-05 9:08 ` [Bug c++/58999] sizeof ...(T) is very slow than clang khurshid.normuradov at gmail dot com
@ 2013-11-05 10:51 ` vhaisman at gmail dot com
2013-11-05 11:34 ` redi at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: vhaisman at gmail dot com @ 2013-11-05 10:51 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58999
--- Comment #2 from Václav Zeman <vhaisman at gmail dot com> ---
You should probably add the complete test case as an attachment.
>From gcc-bugs-return-433537-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 05 11:14:56 2013
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/59001] Use of -pedantic throws errors instead of warnings
Date: Tue, 05 Nov 2013 11:14:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Known to work| |4.7.3, 4.8.2, 4.9.0
Resolution|--- |WORKSFORME
--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed looooong time ago, circa 4.4.
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug c++/58999] sizeof ...(T) is very slow than clang
[not found] <bug-58999-4@http.gcc.gnu.org/bugzilla/>
2013-11-05 9:08 ` [Bug c++/58999] sizeof ...(T) is very slow than clang khurshid.normuradov at gmail dot com
2013-11-05 10:51 ` vhaisman at gmail dot com
@ 2013-11-05 11:34 ` redi at gcc dot gnu.org
2013-11-05 12:22 ` redi at gcc dot gnu.org
2013-11-05 12:57 ` paolo.carlini at oracle dot com
4 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2013-11-05 11:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58999
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-11-05
Ever confirmed|0 |1
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Václav Zeman from comment #2)
> You should probably add the complete test case as an attachment.
There's no need, the testcase is small and self-contained and already present.
However, khurshid, you haven't said what version of GCC you are using or how it
was configured.
>From gcc-bugs-return-433542-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 05 11:53:52 2013
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58993] failure to access pointer to protected member method in base from derived class specialization
Date: Tue, 05 Nov 2013 11:53:00 -0000
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Chris Studholme from comment #0)
> Sample code:
>
> class base {
> protected:
> typedef void (base::*foo_type)() const;
> void foo() const {}
> };
>
> template <typename T>
> struct bar : public base {
> foo_type test() {
> return &base::foo; // OK
The bug is here, this should be an error too (but G++ has lots of bugs with
access checking in templates)
The name foo is a protected member of base, to access it you have to do it via
the derived class, i.e. you should do:
return &bar::foo;
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug c++/58999] sizeof ...(T) is very slow than clang
[not found] <bug-58999-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2013-11-05 11:34 ` redi at gcc dot gnu.org
@ 2013-11-05 12:22 ` redi at gcc dot gnu.org
2013-11-05 12:57 ` paolo.carlini at oracle dot com
4 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2013-11-05 12:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58999
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
--enable-checking=release makes quite a big difference
$ time ~/gcc/4.x/bin/g++ -std=c++11 -c t.cc -ftime-report
Execution times (seconds)
phase setup : 0.00 ( 0%) usr 0.01 ( 2%) sys 0.05 ( 0%) wall
1323 kB ( 0%) ggc
phase parsing : 12.84 (100%) usr 0.44 (96%) sys 13.31 (99%) wall
1422475 kB (100%) ggc
phase opt and generate : 0.00 ( 0%) usr 0.01 ( 2%) sys 0.09 ( 1%) wall
42 kB ( 0%) ggc
phase last asm : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
|overload resolution : 0.03 ( 0%) usr 0.01 ( 2%) sys 0.03 ( 0%) wall
1153 kB ( 0%) ggc
garbage collection : 0.19 ( 1%) usr 0.00 ( 0%) sys 0.19 ( 1%) wall
0 kB ( 0%) ggc
parser function body : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
1 kB ( 0%) ggc
template instantiation : 12.65 (99%) usr 0.44 (96%) sys 13.11 (97%) wall
1422149 kB (100%) ggc
tree gimplify : 0.00 ( 0%) usr 0.01 ( 2%) sys 0.00 ( 0%) wall
0 kB ( 0%) ggc
tree STMT verifier : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
expand : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
1 kB ( 0%) ggc
LRA non-specific : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
shorten branches : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
0 kB ( 0%) ggc
symout : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
rest of compilation : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall
2 kB ( 0%) ggc
TOTAL : 12.84 0.46 13.50
1423858 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
real 0m14.014s
user 0m12.853s
sys 0m0.528s
$ time ~/gcc/4.x-release/bin/g++ -std=c++11 -c t.cc -ftime-report
Execution times (seconds)
phase setup : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 1%) wall
1374 kB ( 0%) ggc
phase parsing : 7.40 (100%) usr 0.28 (100%) sys 7.71 (98%)
wall 1422475 kB (100%) ggc
phase opt and generate : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 1%) wall
42 kB ( 0%) ggc
phase last asm : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
|overload resolution : 0.06 ( 1%) usr 0.01 ( 4%) sys 0.07 ( 1%) wall
1153 kB ( 0%) ggc
garbage collection : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
parser (global) : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
309 kB ( 0%) ggc
template instantiation : 7.39 (100%) usr 0.28 (100%) sys 7.68 (98%)
wall 1422149 kB (100%) ggc
expand : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
1 kB ( 0%) ggc
integrated RA : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
24 kB ( 0%) ggc
shorten branches : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
symout : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
rest of compilation : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
2 kB ( 0%) ggc
TOTAL : 7.41 0.28 7.83
1423909 kB
real 0m8.237s
user 0m7.420s
sys 0m0.328s
But it's still orders of magnitude slower than clang
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug c++/58999] sizeof ...(T) is very slow than clang
[not found] <bug-58999-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2013-11-05 12:22 ` redi at gcc dot gnu.org
@ 2013-11-05 12:57 ` paolo.carlini at oracle dot com
4 siblings, 0 replies; 5+ messages in thread
From: paolo.carlini at oracle dot com @ 2013-11-05 12:57 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58999
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Probably a meta-bug about this sort of issue would also make sense. We have got
a few bugs already.
^ permalink raw reply [flat|nested] 5+ messages in thread