void main()
main: scope:[main]  from
  [0] *main::SCREEN = *VALS
  [1] *(main::SCREEN+1) = *(VALS+1)
  [2] *(main::SCREEN+2) = *(VALS+2)
  [3] *(main::SCREEN+3) = *(VALS+3)
  to:main::@return
main::@return: scope:[main]  from main
  [4] return 
  to:@return