__isoc99_scanf("%d", &ID);free(*(void**)&ptr[8* ID]); } 存在一个double free漏洞,代码没有检车ptr[8*ID]是否已经被释放过,如果用户多次输入相同的ID,会导致同一个内存被多次释放,从而出发double free错误 再看这一块代码 if( globals1[4] !=257) {printf("exit!", &Choice);exit(0); }p...
Growing evidence suggests that telomeres, non-coding DNA sequences that shorten with age and stress, are related in an undefined way to individual breeding performances and survival rates in several species. Short telomeres and elevated shortening rates are typically associated with life stress and low...
正例:在 JDK7 之后,可以直接使用 API ThreadLocalRandom,而在 JDK7 之前,需要编码保证每个线程持有一个实例。 12. 【推荐】在并发场景下,通过双重检查锁(double-checked locking)实现延迟初始化的优化问题隐患(可参考 The "Double-Checked Locking is Broken" Declaration),推荐解决方案中较为简单一种(适用于 JDK...
The fortunate discovery of some cast-off deer-skins and of a heap of acrid77 bones, a provision worthy78 of the place, sustained their flickering79 life-flame, and after eighteen miserable days they were joined by Dr. Richardson and Hepburn, the sole survivors80 of their party, Lieutenant ...