[llvm-bugs] [Bug 43693] New: Clang++ segfaults when compiling our code

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Oct 16 08:51:30 PDT 2019


            Bug ID: 43693
           Summary: Clang++ segfaults when compiling our code
           Product: clang
           Version: unspecified
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: benson31 at llnl.gov
                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 22680
  --> https://bugs.llvm.org/attachment.cgi?id=22680&action=edit
Files requested in error message


Recent clangs have been segfaulting on OSX when compiling our code,
https://github.com/llnl/lbann. It seems to be an issue in one translation unit
in particular, "src/layers/loss/cross_entropy.cpp".

I've followed the instructions at the end of the segfault message and attached
a tarball, "clang-cross-entropy-issue.tar.xz", with the requested files as well
as a log of the output. This was reproduced yesterday with a clang I build from
the head of "master".

Please let me know if there's anything else you need from me. Any help would be
much appreciated.


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