Merge changes I2e3eb0b3,I2f7bd13e am: cb698c387c
am: b5dfec665a

* commit 'b5dfec665a8bb3d995c4e3285649b2f6a236441d':
  Delete FixupDiagMsg and cite the commit that makes it unnecessary.
  Add a test for a port comparison bytecode validation bug.