
void main()
main: scope:[main]  from
  [0] *main::SCREEN = main::midw#0
  [1] *(main::SCREEN+1) = main::midb#0
  [2] if(*main::SCREEN==*(main::SCREEN+1)) goto main::@1
  to:main::@2
main::@2: scope:[main]  from main
  [3] *main::BG_COLOR = 2
  to:main::@return
main::@return: scope:[main]  from main::@1 main::@2
  [4] return 
  to:@return
main::@1: scope:[main]  from main
  [5] *main::BG_COLOR = 5
  to:main::@return
