message: [IRExecutionUnit] Initialize uninititialized member variable.
  Found by the ubsan build.
  <rdar://problem/31106358>
diff: @@ -421,8 +421,8 @@ private:
  lldb::addr_t m_function_load_addr;
  lldb::addr_t m_function_end_load_addr;
  - bool m_strip_underscore; ///< True for platforms where global symbols have a _
  - ///prefix
  + bool m_strip_underscore = true; ///< True for platforms where global symbols
  + /// have a _ prefix
  bool m_reported_allocations; ///< True after allocations have been reported.
  ///It is possible that
  ///< sections will be allocated when this is true, in which case they weren't
  