栈溢出

很简单的东西，总是搞忘了，记录一下：

#include <stdio.h>void f(char *s){char s1[20] = "abcdefgaaaaaaaaaaaaaaaaa";strcpy(s,s1);}void main(){char s2[4] = {0};f(s2);}

另外一个例子：

#include <stdio.h>void f(){/*__asm__("int $0x3\n""int $0x3\n""int $0x3");*/char s2[4] = {0};char s1[20] = "aaaaaaaaaaaaaaaaaaaaaa";strcpy(s2,s1);}void main(){f();}