[Bug target/65670] New: [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu

[Bug target/65670] New: [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

            Bug ID: 65670
           Summary: [5 Regression] missing libstdc++ symbols on
                    powerpc64le-linux-gnu
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org

not sure if this is a local configuration error, but I end up with a libstdc++
without these symbols (which exist in a lib built from the 4.9 branch):

 _ZNSt17bad_function_callD0Ev@GLIBCXX_3.4.15 4.6
 _ZNSt17bad_function_callD1Ev@GLIBCXX_3.4.15 4.6
 _ZNSt17bad_function_callD2Ev@GLIBCXX_3.4.15 4.6
 _ZTVSt17bad_function_call@GLIBCXX_3.4.15 4.6

in any case, there should be a baseline_symbols.txt for powerpc64le-linux-gnu,
which currently doesn't exist.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[mkuvyrkov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> changed:

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

--- Comment #2 from Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> ---
Demangled, these are:

std::bad_function_call::~bad_function_call()
std::bad_function_call::~bad_function_call()
std::bad_function_call::~bad_function_call()
vtable for std::bad_function_call

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #3 from Matthias Klose <doko at gcc dot gnu.org> ---
at least on powerpc64le this looks like a versioning issue. in 4.9 these were
versioned @CXXABI_1.3.5, now in 5, they are versioned @GLIBCXX_3.4.15.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[schwab@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
Worksforme.

$ objdump -T usr/lib64/libstdc++.so.6.0.21 | grep bad_function_callD
00000000000e7a90 g    DF .text  0000000000000050  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD0Ev
00000000000e7a40 g    DF .text  0000000000000044  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD2Ev
00000000000e7a40 g    DF .text  0000000000000044  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD1Ev
$ objdump -T usr/lib64/libstdc++.so.6.0.20 | grep 17bad_function_callD
00000000000fce10 g    DF .text  0000000000000050  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD0Ev
00000000000fcdc0 g    DF .text  0000000000000044  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD1Ev
00000000000fcdc0 g    DF .text  0000000000000044  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD2Ev

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[mkuvyrkov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #5 from Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> ---
Mattias, Andreas,

What binutils versions are you using?  I'm starting to think this can be a
linker optimization or linker bug.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #6 from Matthias Klose <doko at gcc dot gnu.org> ---
both seen with 2.25 release, and powerpc64le with 2.25 branch.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #8 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I do plan to add the baseline_symbols.txt file for powerpc64le-linux-gnu in a
patch shortly.  I thought this had been done, but it seems to have fallen
through the cracks.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[adconrad at 0c3 dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

Adam Conrad <adconrad at 0c3 dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |adconrad at 0c3 dot net

--- Comment #9 from Adam Conrad <adconrad at 0c3 dot net> ---
Testing in an Ubuntu 15.04 chroot with the latest distro 4.9 and the latest 5.0
from Matthias's PPA, I see this:

(vivid-ppc64el)adconrad@kelsey01:~$ objdump -T
/usr/lib/powerpc64le-linux-gnu/libstdc++.so.6.0.20 | grep 17bad_function_call
000000000014f268  w   DO .data.rel.ro   0000000000000028  GLIBCXX_3.4.15
_ZTVSt17bad_function_call
00000000000f7ff0 g    DF .text  0000000000000050  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD0Ev
00000000000f7f80 g    DF .text  0000000000000020  GLIBCXX_3.4.18 0x60
_ZNKSt17bad_function_call4whatEv
00000000000f7fa0 g    DF .text  0000000000000044  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD1Ev
000000000014f250  w   DO .data.rel.ro   0000000000000018  GLIBCXX_3.4.15
_ZTISt17bad_function_call
00000000000f7fa0 g    DF .text  0000000000000044  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD2Ev
(vivid-ppc64el)adconrad@kelsey01:~$ objdump -T
whee/usr/lib/powerpc64le-linux-gnu/libstdc++.so.6.0.21 | grep
17bad_function_call
00000000000e1e70 g    DF .text  0000000000000050  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD0Ev
00000000000e1e20 g    DF .text  0000000000000044  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD2Ev
00000000000e1e00 g    DF .text  0000000000000020  GLIBCXX_3.4.18 0x60
_ZNKSt17bad_function_call4whatEv
00000000001ea988  w   DO .data.rel.ro   0000000000000028  GLIBCXX_3.4.15
_ZTVSt17bad_function_call
00000000001ea970  w   DO .data.rel.ro   0000000000000018  GLIBCXX_3.4.15
_ZTISt17bad_function_call
00000000000e1e20 g    DF .text  0000000000000044  GLIBCXX_3.4.15 0x60
_ZNSt17bad_function_callD1Ev

In other words, it all looks fine to me, so I'm not entirely sure where he's
seeing the regression.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2015-04-07
   Target Milestone|---                         |5.0
     Ever confirmed|0                           |1

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #10 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Per discussion on gcc-patches, powerpc64le-linux-gnu shares the
baseline_symbols.txt file with powerpc64-linux-gnu, and there's no current
reason for them to diverge.  So nothing to do on that front.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

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

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

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And baseline_symbols.txt has been updated for powerpc64-linux (if somebody from
IBM could update powerpc-linux (32-bit), it would be greatly appreciated, I
don't have an rpm build for that right now, as Fedora is 64-bit only on ppc*
these days).

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #12 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I've generated the new version for powerpc-linux-gnu.  I believe this needs to
be updated identically in powerpc-linux-gnu/baseline_symbols.txt and in
powerpc64-linux-gnu/32/baseline_symbols.txt.  Is that correct?

Before committing this, I'll post the differences from the old files on
gcc-patches.  I think you said I need to delete a couple of the TLS symbols, so
I want to verify that.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Bill Schmidt from comment #12)
> I've generated the new version for powerpc-linux-gnu.  I believe this needs
> to be updated identically in powerpc-linux-gnu/baseline_symbols.txt and in
> powerpc64-linux-gnu/32/baseline_symbols.txt.  Is that correct?

Yeah.

> Before committing this, I'll post the differences from the old files on
> gcc-patches.  I think you said I need to delete a couple of the TLS symbols,
> so I want to verify that.

Yes.  Please also verify the patch will only add symbols to new symbol versions
(GLIBCXX_3.4.21, CXXABI_1.3.9, GLIBCXX_LDBL_3.4.21 I think are the relevant to
PPC).

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #14 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
OK.  Yes, only new symbols except for those two rogue TLS symbols that I'll
remove.

[Bug target/65670] [5 Regression] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

--- Comment #15 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
powerpc version committed as r221974.

[Bug target/65670] missing libstdc++ symbols on powerpc64le-linux-gnu and arm-linux-gnueabi

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65670

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |INVALID
            Summary|[5/6 Regression] missing    |missing libstdc++ symbols
                   |libstdc++ symbols on        |on powerpc64le-linux-gnu
                   |powerpc64le-linux-gnu and   |and arm-linux-gnueabi
                   |arm-linux-gnueabi           |

--- Comment #16 from Matthias Klose <doko at gcc dot gnu.org> ---
rechecked, and I really see the same symbols as everybody else. sorry for the
noise.