POTION_INIT_STACK  264 core/potion.c    POTION_INIT_STACK(sp);
POTION_INIT_STACK   91 test/api/gc-bench.c   POTION_INIT_STACK(sp);
POTION_INIT_STACK   58 test/api/gc-test.c   POTION_INIT_STACK(sp);
POTION_INIT_STACK  107 test/api/gc-test.c   POTION_INIT_STACK(sp);
POTION_INIT_STACK  271 test/api/potion-test.c   POTION_INIT_STACK(sp);