#define szmalloc(size) memset(smalloc(size), 0, size)
#define sstrdup(str) ({const char *__strbuf__ = (str); strcpy(smalloc(strlen(__strbuf__) + 1), __strbuf__);})
#define omalloc(o) ((o) = szmalloc(sizeof(*(o))))
#define szmalloc(size) memset(smalloc(size), 0, size)
#define sstrdup(str) ({const char *__strbuf__ = (str); strcpy(smalloc(strlen(__strbuf__) + 1), __strbuf__);})
#define omalloc(o) ((o) = szmalloc(sizeof(*(o))))