Scm_AddCleanupHandler 2845 src/gauche.h   SCM_EXTERN void *Scm_AddCleanupHandler(void (*proc)(void *data), void *data);
Scm_AddCleanupHandler  396 src/main.c         Scm_AddCleanupHandler(cleanup_main, NULL);
Scm_AddCleanupHandler 3911 src/vm.c           Scm_AddCleanupHandler(dump_insn_frequency, NULL);