[llvm-bugs] [Bug 35665] llvm-cov: segmentation fault while running large tests

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Dec 14 15:28:10 PST 2017


https://bugs.llvm.org/show_bug.cgi?id=35665

Vedant Kumar <vsk at apple.com> changed:

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

--- Comment #5 from Vedant Kumar <vsk at apple.com> ---
Ok great!

It's possible that this is surfacing because coverage instrumentation is
serving as an optimization barrier, but this sort of thing should be detected
by -fsanitize=null or -fsanitize=vptr. Let me know if there's a false negative
there.

It's also possible that the instrumentation overhead is causing a timing issue.

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