[llvm-bugs] [Bug 45042] New: Clang 9 crashes while building the ATLAS offline software

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=45042

            Bug ID: 45042
           Summary: Clang 9 crashes while building the ATLAS offline
                    software
           Product: clang
           Version: 9.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: attila.krasznahorkay at cern.ch
                CC: blitzrakete at gmail.com, dgregor at apple.com,
                    erik.pilkington at gmail.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

Created attachment 23179
  --> https://bugs.llvm.org/attachment.cgi?id=23179&action=edit
Collection of the files generated by clang, and the full printed output from
the compilation command

While trying to build the ATLAS Offline Software
(https://gitlab.cern.ch/atlas/athena) using Clang 9, we ran into a number of
compilation issues. :-(

http://atlas-computing.web.cern.ch/atlas-computing/links/distDirectory/gitwww/GITWebArea/nightlies/master/index.x86_64-centos7-clang9-opt.html

You can find the output from one of the failed compilation commands here for
instance:

http://atlas-computing.web.cern.ch/atlas-computing/links/distDirectory/gitwww/GITWebArea/nightlies/master/2020-02-26T2110/Athena/x86_64-centos7-clang9-opt/Athena/Control.RootUtils.log.html

I.e. the compilation on
https://gitlab.cern.ch/atlas/athena/blob/master/Control/RootUtils/src/pyroot/Converters.cxx
dies with a pretty long stack trace.

Unfortunately my expertise with such issues with very limited, so I'm just
following the instructions from the crash, and posting the files produced
during the failed build, with a text file holding the full printed output from
the crashed build command.

Cheers,
          Attila

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