[Bug libstdc++/53475] New: Section type conflict errors in libstdc++ testsuite

[Bug libstdc++/53475] New: Section type conflict errors in libstdc++ testsuite

[Greta.Yorsh at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

             Bug #: 53475
           Summary: Section type conflict errors in libstdc++ testsuite
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: Greta.Yorsh@arm.com
                CC: paolo.carlini@oracle.com


Failures due to "section type conflict" in libstdc++-v3 testsuite:

FAIL: 20_util/tuple/creation_functions/tie2.cc (test for excess errors)
Excess errors:
/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/include/tuple:1057:25:
error: std::ignore causes a section type conflict with std::ignore

FAIL: 25_algorithms/stable_sort/49559.cc (test for excess errors)
Excess errors:
/work/local-checkouts/gcc-fsf/libstdc++-v3/testsuite/25_algorithms/stable_sort/49559.cc:37:11:
error: A causes a section type conflict with A

Known to fail: r187724
Known to work: r187546

Executing on host: /work/builds/a9-may/arm-none-eabi/gcc2/./gcc/g++
-shared-libgcc -B/work/builds/a9-may/arm-none-eabi/gcc2/./gcc -nostdinc++
-L/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/src
-L/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/src/.libs
-B/work/builds/a9-may/install/arm-none-eabi/bin/
-B/work/builds/a9-may/install/arm-none-eabi/lib/ -isystem
/work/builds/a9-may/install/arm-none-eabi/include -isystem
/work/builds/a9-may/install/arm-none-eabi/sys-include
-B/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/./libstdc++-v3/src/.libs
-D_GLIBCXX_ASSERT -fmessage-length=0 -ffunction-sections -fdata-sections -g -O2
-g -O2 -DLOCALEDIR="." -nostdinc++
-I/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/include/arm-none-eabi
-I/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/include
-I/work/local-checkouts/gcc-fsf/libstdc++-v3/libsupc++
-I/work/local-checkouts/gcc-fsf/libstdc++-v3/include/backward
-I/work/local-checkouts/gcc-fsf/libstdc++-v3/testsuite/util
/work/local-checkouts/gcc-fsf/libstdc++-v3/testsuite/20_util/tuple/creation_functions/tie2.cc
libstdc++_tg.o   -std=gnu++0x ./libtestc++.a        -Wl,-wrap,exit
-Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -lm   -o ./tie2.exe    (timeout
= 600)
In file included from
/work/local-checkouts/gcc-fsf/libstdc++-v3/testsuite/20_util/tuple/creation_functions/tie2.cc:22:0:
/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/include/tuple:1057:25:
error: std::ignore causes a section type conflict with std::ignore
   const _Swallow_assign ignore{};
                         ^

Executing on host: /work/builds/a9-may/arm-none-eabi/gcc2/./gcc/g++
-shared-libgcc -B/work/builds/a9-may/arm-none-eabi/gcc2/./gcc -nostdinc++
-L/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/src
-L/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/src/.libs
-B/work/builds/a9-may/install/arm-none-eabi/bin/
-B/work/builds/a9-may/install/arm-none-eabi/lib/ -isystem
/work/builds/a9-may/install/arm-none-eabi/include -isystem
/work/builds/a9-may/install/arm-none-eabi/sys-include
-B/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/./libstdc++-v3/src/.libs
-D_GLIBCXX_ASSERT -fmessage-length=0 -ffunction-sections -fdata-sections -g -O2
-g -O2 -DLOCALEDIR="." -nostdinc++
-I/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/include/arm-none-eabi
-I/work/builds/a9-may/arm-none-eabi/gcc2/arm-none-eabi/libstdc++-v3/include
-I/work/local-checkouts/gcc-fsf/libstdc++-v3/libsupc++
-I/work/local-checkouts/gcc-fsf/libstdc++-v3/include/backward
-I/work/local-checkouts/gcc-fsf/libstdc++-v3/testsuite/util
/work/local-checkouts/gcc-fsf/libstdc++-v3/testsuite/25_algorithms/stable_sort/49559.cc
libstdc++_tg.o   -std=gnu++0x ./libtestc++.a        -Wl,-wrap,exit
-Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -lm   -o ./49559.exe    (timeout
= 600)
/work/local-checkouts/gcc-fsf/libstdc++-v3/testsuite/25_algorithms/stable_sort/49559.cc:37:11:
error: A causes a section type conflict with A
 const int A[] = { 10 };
           ^

[Bug libstdc++/53475] Section type conflict errors in libstdc++ testsuite

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-05-24 14:41:59 UTC ---
Please try to narrow the commit which is causing the problem a bit more: to be
really honest, it's the first time in my life I see this kind of error message
and I really doubt the library itself or even the C++ front-end is the culprit.

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|libstdc++                   |c++
            Version|4.7.0                       |4.8.0
   Target Milestone|---                         |4.8.0
            Summary|Section type conflict       |[4.8 Regression] Section
                   |errors in libstdc++         |type conflict errors in
                   |testsuite                   |libstdc++ testsuite

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-05-26 18:09:36 UTC ---
Can you attach the preprocessed sources?

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[Greta.Yorsh at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

--- Comment #3 from Greta Yorsh <Greta.Yorsh at arm dot com> 2012-05-28 11:17:00 UTC ---
Created attachment 27512
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27512
preprocessed source

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[Greta.Yorsh at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Greta Yorsh <Greta.Yorsh at arm dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org

--- Comment #4 from Greta Yorsh <Greta.Yorsh at arm dot com> 2012-05-28 11:22:46 UTC ---
The problem is caused by r187631: 
http://gcc.gnu.org/ml/gcc-patches/2012-05/msg01222.html

I am adding the author to CC and attaching the preprocessed sources.

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|paolo.carlini at oracle dot |
                   |com                         |

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-05-28 11:36:29 UTC ---
Thanks!

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Jan Hubicka <hubicka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-05-29
         AssignedTo|unassigned at gcc dot       |hubicka at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-05-29 12:07:13 UTC ---
apparently mine ;)

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-07-04 20:59:09 UTC ---
N.B. this is easily reproducable on gcc110 in the compile farm, a
powerpc64-unknown-linux-gnu box

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |arm-none-eabi,
                   |                            |powerpc64-unknown-linux-gnu
           Priority|P3                          |P1

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[schwab@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |schwab@linux-m68k.org

--- Comment #8 from Andreas Schwab <schwab@linux-m68k.org> 2012-09-09 11:44:55 UTC ---
*** Bug 54530 has been marked as a duplicate of this bug. ***

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[Bernhard.Rosenkranzer at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

--- Comment #9 from Bernhard Rosenkränzer <Bernhard.Rosenkranzer at linaro dot org> 2012-10-02 19:52:31 UTC ---
This also happens when building iptables with gcc trunk, so it's not C++
related

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[Bernhard.Rosenkranzer at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

--- Comment #10 from Bernhard Rosenkränzer <Bernhard.Rosenkranzer at linaro dot org> 2012-10-02 20:00:07 UTC ---
Created attachment 28332
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28332
Shorter, plain C, test case extracted from iptables, not yet reduced

Adding shorter, plain C, test case

$ /opt/android-toolchain-trunk/bin/arm-linux-androideabi-gcc -O3
-fdata-sections -g -c -o test.o
libxt_CT.iout/target/product/maguro/obj/STATIC_LIBRARIES/libext_intermediates/libxt_CT.c:58:31:
error: exp_event_tbl causes a section type conflict with exp_event_tbl
 static const struct event_tbl exp_event_tbl[] = {
                               ^

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[Bernhard.Rosenkranzer at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Bernhard Rosenkränzer <Bernhard.Rosenkranzer at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #28332|0                           |1
        is obsolete|                            |

--- Comment #11 from Bernhard Rosenkränzer <Bernhard.Rosenkranzer at linaro dot org> 2012-10-02 20:26:32 UTC ---
Created attachment 28334
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28334
Reduced test case

Attaching reduced test case

$ /opt/android-toolchain-trunk/bin/arm-linux-androideabi-gcc -O3
-fdata-sections -g -c -o test.o bug53475.c 
bug53475.c:5:23: error: b causes a section type conflict with b
 static const struct a b[] = {
                       ^

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[Bernhard.Rosenkranzer at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

--- Comment #12 from Bernhard Rosenkränzer <Bernhard.Rosenkranzer at linaro dot org> 2012-10-03 12:25:21 UTC ---
*** Bug 54595 has been marked as a duplicate of this bug. ***

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

--- Comment #13 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-12 15:38:12 UTC ---
Honza, I'm a bit confused here: if I understand correctly your r187631 was only
about a C++ optimization, but now I see C testcases too here?!? Do we have two
separate issues?

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[doko at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Matthias Klose <doko at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |doko at gcc dot gnu.org

--- Comment #14 from Matthias Klose <doko at gcc dot gnu.org> 2012-11-21 04:22:39 UTC ---
Andrew Pinski:
> I think bug 55395 might be a dup of bug 53475.

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |WAITING
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-07 12:45:31 UTC ---
(In reply to comment #14)
> Andrew Pinski:
> > I think bug 55395 might be a dup of bug 53475.

Or vice versa, now that PR55395 is fixed, can you still reproduce this?

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[gretay at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

gretay at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gretay at gcc dot gnu.org

--- Comment #16 from gretay at gcc dot gnu.org 2012-12-10 12:29:02 UTC ---
On arm-none-eabi:
FAIL->PASS: 25_algorithms/stable_sort/49559.cc (test for excess errors).
This test passes now (since 2012-12-07), likely fixed by the patches for
PR55395.

FAIL->PASS: 20_util/tuple/creation_functions/tie2.cc (test for excess errors)
This test has already been fixed before and passing since 2012-11-05.

Do these tests also pass on powerpc64-unknown-linux-gnu?

Thanks,
Greta

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[pthaugen at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

--- Comment #17 from Pat Haugen <pthaugen at gcc dot gnu.org> 2012-12-10 20:15:52 UTC ---
(In reply to comment #16)
> Do these tests also pass on powerpc64-unknown-linux-gnu?

The libstdc++ failures no longer occur on powerpc64 either.

[Bug c++/53475] [4.8 Regression] Section type conflict errors in libstdc++ testsuite

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53475

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-10 20:31:51 UTC ---
Dup.

*** This bug has been marked as a duplicate of bug 55395 ***