- Tag 1: a record containing two pointers – Tag 2: a record containing one pointer and one integer – Tag 3: a record containing one integer Each half of memory is 13 bytes Variable: 8 From space: 1 3 8 3 0 2 3 7 2 0 8 3 9 Addr: 00 01 02 03 04 05 06 07 08 09 10 11 12 To space: 0 0 0 0 0 0 0 0 0 0 0 0 0 Addr: 13 14 15 16 17 18 19 20 21 22 23 24 25 ---------------------------------------- After GC: Variable: 13 From space: Addr: 00 01 02 03 04 05 06 07 08 09 10 11 12 v To space: 2 16 8 1 19 13 3 0 0 0 0 0 0 Addr: 13 14 15 16 17 18 19 20 21 22 23 24 25 ^