Benjamin Bannier created MESOS-6606:
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Summary: Reject optimized builds with libcxx before 3.9
Key: MESOS-6606
URL: https://issues.apache.org/jira/browse/MESOS-6606
Project: Mesos
Issue Type: Bug
Components: libprocess, stout
Reporter: Benjamin Bannier
Recent clang versions optimize more aggressively which leads to runtime errors
using valid code, see e.g., MESOS-5745, due to code exposing undefined behavior
in libcxx-3.8 and earlier. This was fixed with upstream libcxx-3.9. See
https://reviews.llvm.org/D20786 for the patch and
https://llvm.org/bugs/show_bug.cgi?id=28469 for the code example extracted from
our code base.
We should consider rejecting builds if libcxx-3.8 or older is detected since
not all users compiling Mesos might run the test suite. In our decision to
reject we could possibly also take the used clang versions into account (which
would just ensure we don't run into the known problems from the UB in libcxx).
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