stage2 LLVM: Use a packed aggregate for union payload init
Without the packed qualifier, the type layout that we use to
initialize doesn't match the correct layout of the underlying
storage, causing corrupted data and past-the-end writes.
e6ebdcb82eCody Tapscott committed on 10/11/2022, 7:42:01 PM· committed by Andrew Kelleyparent8635c18