[Bug default/28326] New: inexplicable self compare failure on aarch64 library

[Bug default/28326] New: inexplicable self compare failure on aarch64 library

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28326

            Bug ID: 28326
           Summary: inexplicable self compare failure on aarch64 library
           Product: libabigail
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: woodard at redhat dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

With the latest trunk as of 7488c8df3bf10750ce059a0ec1d44d8149149c86

comparing     /usr/lib64/libmcpp.so.0.3.0 from libmcpp-2.7.2-27.fc34.aarch64

to itself exits with a 1 but nothing is printed

/home/ben/Shared/Work/test/libabigail-aarch64/bin/abidw --abidiff
/usr/lib64/libmcpp.so.0.3.0
Downloading separate debug info for
/home/ben/Shared/Work/BuildSI/build-abi-tests/libabigail/system-supplied DSO at
0xfffff7ffb000...
Downloading separate debug info for /lib64/libpthread.so.0...
Downloading separate debug info for
/home/ben/.cache/debuginfod_client/0b63b1f8064f7fd638332ea91684bfc9c525286a/debuginfo...
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Downloading separate debug info for /lib64/libelf.so.1...
Downloading separate debug info for
/home/ben/.cache/debuginfod_client/e397c60bbdc5baafa2c2146a26a6c25eaf115991/debuginfo...
Downloading separate debug info for /lib64/libdw.so.1...
Downloading separate debug info for /lib64/libm.so.6...
Downloading separate debug info for /lib64/libc.so.6...
Downloading separate debug info for /lib64/libdebuginfod.so.1...
Downloading separate debug info for /lib64/libresolv.so.2...
[Inferior 1 (process 325663) exited with code 01]
No stack.

This only happens with the aarch64 version of the library. It does not appear
on x86_64. 

However running the x86_64 version of the abidw on the aarch64 version of the
library produces the same result.

[ben@alien test]$ abidw --abidiff libmcpp.so.0.3.0 
Downloading from https://debuginfod.fedoraproject.org/ 164627
Downloading from https://debuginfod.fedoraproject.org/ 247
[ben@alien test]$ echo $?
1
[ben@alien test]$ uname -a
Linux alien.localdomain 5.13.12-200.fc34.x86_64 #1 SMP Wed Aug 18 13:27:18 UTC
2021 x86_64 x86_64 x86_64 GNU/Linux

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[Bug default/28326] inexplicable self compare failure on aarch64 library

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28326

Ben Woodard <woodard at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |27019


Referenced Bugs:

https://sourceware.org/bugzilla/show_bug.cgi?id=27019
[Bug 27019] BUILD metabug
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[Bug default/28326] inexplicable self compare failure on aarch64 library

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28326

--- Comment #1 from Ben Woodard <woodard at redhat dot com> ---
This continues to be a problem with the trunk as of
1115e3f08e8f30e7e412294a563a78a15d0373c1

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[Bug default/28326] inexplicable self compare failure on aarch64 library

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28326

Ben Woodard <woodard at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #2 from Ben Woodard <woodard at redhat dot com> ---
It appears to be fixed now.

$ /home/ben/Shared/Work/test/libabigail-aarch64/bin/abidw --abidiff
/usr/lib64/libmcpp.so.0.3.0
Downloading from https://debuginfod.fedoraproject.org/ 163499
$ echo $?
0

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