ABLOCK_ABASE     1294 src/alloc.c          eassert (ABLOCK_ABASE (&abase->blocks[3]) == abase); /* 3 is arbitrary */
ABLOCK_ABASE     1295 src/alloc.c          eassert (ABLOCK_ABASE (&abase->blocks[0]) == abase);
ABLOCK_ABASE     1301 src/alloc.c      abase = ABLOCK_ABASE (free_ablock);
ABLOCK_ABASE     1324 src/alloc.c      struct ablocks *abase = ABLOCK_ABASE (ablock);