[all-commits] [llvm/llvm-project] 099fd3: Fix undefined behavior due to deleting an object w...

[Richard Smith via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 099fd3748470435d478dc480c00ac1f848b7c55d
      https://github.com/llvm/llvm-project/commit/099fd3748470435d478dc480c00ac1f848b7c55d
  Author: Richard Smith <richard at metafoo.co.uk>
  Date:   2020-07-14 (Tue, 14 Jul 2020)

  Changed paths:
    M llvm/include/llvm/ExecutionEngine/Orc/LLJIT.h
    M llvm/include/llvm/ExecutionEngine/Orc/LazyReexports.h
    M llvm/lib/ExecutionEngine/Orc/LazyReexports.cpp

  Log Message:
  -----------
  Fix undefined behavior due to deleting an object with a non-virtual
destructor via a pointer of the wrong static type.

This caused crashes during deallocation in C++14 builds when using a
deallocator whose sized delete requires the size argument to be correct.

Also make the LazyCallThroughManager destructor protected to catch this
sort of bug in the future.