RTCHECK          2953 compat/nedmalloc/malloc.c.h #define RTCHECK(e)  __builtin_expect(e, 1)
RTCHECK          2955 compat/nedmalloc/malloc.c.h #define RTCHECK(e)  (e)
RTCHECK          2958 compat/nedmalloc/malloc.c.h #define RTCHECK(e)  (1)