* [Bug c++/47723] internal compiler: Segmentation fault - gcc 4.5.2 Arch Linux
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@ 2011-02-13 23:29 ` zackw at panix dot com
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From: zackw at panix dot com @ 2011-02-13 23:29 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #1 from Zack Weinberg <zackw at panix dot com> 2011-02-13 23:27:10 UTC ---
> I have run the build a second time and it makes it past the point
> where it segfaulted,
This means your problem is almost certainly *not* a bug in GCC, but rather a
hardware fault: most commonly a bad RAM module. Please run a memory tester
against your computer (a good one is at http://www.memtest.org/ ) -- you may
have to run it for several hours for definitive results.
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-02-14 00:07:01 UTC ---
(In reply to comment #0)
> I have created a tar.bz2 of the src/kcontrol/konq directory (which I hope is
> what you need) and I've attached it.
http://gcc.gnu.org/bugs/ says we want preprocessed source (generated by using
-save-temps) and not an archive of sources.
It also says we do not want:
An error that occurs only some of the times a certain file is compiled, such
that retrying a sufficient number of times results in a successful compilation;
this is a symptom of a hardware problem, not of a compiler bug (sorry)
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From: ebotcazou at gcc dot gnu.org @ 2011-02-14 8:20 UTC (permalink / raw)
To: gcc-bugs
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2011.02.14 08:16:16
CC| |ebotcazou at gcc dot
| |gnu.org
Ever Confirmed|0 |1
--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-02-14 08:16:16 UTC ---
GCC is unlikely to randomly crash like that (especially on Linux) so Zack might
be on the right track. Please try to reproduce on another machine.
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From: drankinatty at suddenlinkmail dot com @ 2011-02-14 15:59 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #4 from David C. Rankin <drankinatty at suddenlinkmail dot com> 2011-02-14 15:57:15 UTC ---
Thanks guys,
The iccconfig.cpp build failure is reproducible 100% of the time on gcc-4.5.2
on both i686 and x86_64 (this error does not exist on gcc43). The kcontrol/kong
segfault looks like a side effect of the iccconfig problem.
As a test, I built and installed gcc43 and kdelibs builds fine -- (no
iccconfig.cpp error and no segfault) The build with gcc43 looked like this:
cmake ../ \
-DCMAKE_C_COMPILER="/usr/bin/gcc-4.3" \
-DCMAKE_CXX_COMPILER="/usr/bin/g++-4.3" \
-DCMAKE_INSTALL_PREFIX=/opt/qt \
-DWITH_QT3=ON \
-DQT_LIBRARY_DIRS=/opt/qt/lib \
-DCMAKE_SKIP_RPATH=ON || return 1
make
I have run memtest86+ (for hours, through all tests/passes for 2 complete
cycles and there are no problems)
So if I understand what you need, you need me to build kdelibs with 4.5.2 to
the point of failure with?
cmake ../ \
-DCMAKE_C_COMPILER="/usr/bin/gcc -save-temps" \
-DCMAKE_CXX_COMPILER="/usr/bin/g++ -save-temps" \
Then I need to attach the precompiled sources -- which if I'm doing an out of
source build in a temporary kdebase/src directory are which files? Are the
precompiled sources going to end up in the kdebase/src/kcontrol/iccconfig
directory -or- do you need the entire kdebase/src directory?
I'm happy to get you anything that you need, but as I mentioned, this is the
first possible compiler error I've run into. I want to do my part and get you
everything that is needed so we can either rule-in or rule-out a gcc issue, but
I just need a bit of explanation of what "what you need" is. I obviously
misunderstood what the precompiled sources were, but I'm happy to go rebuild
with -save-temps. I just need to know if simply adding -save-temps to the gcc
flags will do it?
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From: redi at gcc dot gnu.org @ 2011-02-14 16:45 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-02-14 16:19:39 UTC ---
(In reply to comment #4)
>
> So if I understand what you need, you need me to build kdelibs with 4.5.2 to
> the point of failure with?
>
> cmake ../ \
> -DCMAKE_C_COMPILER="/usr/bin/gcc -save-temps" \
> -DCMAKE_CXX_COMPILER="/usr/bin/g++ -save-temps" \
No, you can just run it to the point of failure, then repeat the command that
failed, adding -save-temps. You don't need to use -save-temps for everything.
> Then I need to attach the precompiled sources -- which if I'm doing an out of
> source build in a temporary kdebase/src directory are which files? Are the
> precompiled sources going to end up in the kdebase/src/kcontrol/iccconfig
> directory -or- do you need the entire kdebase/src directory?
Please don't send the whole directory. Just generate the preprocessed file for
the one source file that fails to compile, and send us that preprocessed file,
the one with a .ii extension.
> I'm happy to get you anything that you need, but as I mentioned, this is the
> first possible compiler error I've run into. I want to do my part and get you
> everything that is needed so we can either rule-in or rule-out a gcc issue, but
> I just need a bit of explanation of what "what you need" is. I obviously
> misunderstood what the precompiled sources were, but I'm happy to go rebuild
> with -save-temps. I just need to know if simply adding -save-temps to the gcc
> flags will do it?
Yes, but only do it for the gcc command that fails. We don't want dozens of
preprocessed files for the things that compile ok, that's no use to anyone.
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From: redi at gcc dot gnu.org @ 2011-02-14 16:46 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-02-14 16:44:33 UTC ---
iccconfig.cpp:289 looks like:
KRandrSimpleAPI *randrsimple = new KRandrSimpleAPI::KRandrSimpleAPI();
That code is invalid, gcc 4.5 is correct to reject it.
It should be:
KRandrSimpleAPI *randrsimple = new KRandrSimpleAPI();
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From: redi at gcc dot gnu.org @ 2011-02-14 16:47 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-02-14 16:46:28 UTC ---
the code can be reduced to
struct S { };
int main()
{
S* p = new S::S();
}
which is rejected too.
The Trinity code needs to be fixed as suggested above, doing that will work
with all versions of GCC (and other compilers)
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From: drankinatty at suddenlinkmail dot com @ 2011-02-14 19:47 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #8 from David C. Rankin <drankinatty at suddenlinkmail dot com> 2011-02-14 19:43:14 UTC ---
Ok,
I managed to generate iccconfig.ii and it is too big to attach. I have made it
available on my site:
http://www.3111skyline.com/dl/dt/trinity/errors/iccconfig-452/iccconfig.ii
The whole build dir for iccconfig is there too:
http://www.3111skyline.com/dl/dt/trinity/errors/iccconfig-452/
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From: ebotcazou at gcc dot gnu.org @ 2011-02-14 19:59 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-02-14 19:50:52 UTC ---
> I managed to generate iccconfig.ii and it is too big to attach. I have made it
> available on my site:
>
> http://www.3111skyline.com/dl/dt/trinity/errors/iccconfig-452/iccconfig.ii
zip/gzip/bzip2 is your friend.
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From: redi at gcc dot gnu.org @ 2011-02-14 20:42 UTC (permalink / raw)
To: gcc-bugs
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at redhat dot com
Severity|major |normal
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-02-14 20:33:53 UTC ---
As I said, GCC's behaviour was changed intentionally, for Bug 11764, to conform
to a defect report against the C++ standard, DR 147
Jason, does DR 318 mean G++ should accept this, because the constructor is not
an acceptable lookup result?
struct S { };
S* p = new S::S();
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From: drankinatty at suddenlinkmail dot com @ 2011-02-14 21:06 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #11 from David C. Rankin <drankinatty at suddenlinkmail dot com> 2011-02-14 21:04:44 UTC ---
Created attachment 23342
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23342
iccconfig.ii (bzip2)
Eric,
Sorry for not zipping it and attaching it. When I originally tried to post
it, the Create New Attachment page just said to include a link to it. I've
attached it now for completeness (even though you probably don't need it now).
Thank you all for your help and input.
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To: gcc-bugs
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |UNCONFIRMED
Ever Confirmed|1 |0
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From: jason at gcc dot gnu.org @ 2011-05-03 21:15 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47723
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed|2011-02-14 08:16:16 |2011.05.03 21:14:02
CC| |jason at gcc dot gnu.org
Ever Confirmed|0 |1
--- Comment #12 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-03 21:14:02 UTC ---
(In reply to comment #10)
> Jason, does DR 318 mean G++ should accept this, because the constructor is not
> an acceptable lookup result?
> struct S { };
> S* p = new S::S();
I suppose it does.
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From: jason at gcc dot gnu.org @ 2011-05-03 21:24 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #13 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-03 21:18:14 UTC ---
Actually, I think it's unclear. 318 had to do with elaborated type specifiers,
for which we explicitly say that the lookup is done "ignoring any non-type
names that have been declared."
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From: jason at gcc dot gnu.org @ 2011-05-04 13:57 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #14 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-04 13:42:19 UTC ---
(In reply to comment #10)
> struct S { };
> S* p = new S::S();
EDG 4.0-4.3 all reject this as well.
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From: jason at gcc dot gnu.org @ 2011-05-07 1:55 UTC (permalink / raw)
To: gcc-bugs
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID
--- Comment #15 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-07 01:43:08 UTC ---
Other folks on the committee agree that this is ill-formed, so I'm going to
close the PR.
^ permalink raw reply [flat|nested] 17+ messages in thread