小编sum*_*ock的帖子

这是我的代码.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char buf1[100];
char buf2[100];

int main()
{
    char **p = (char**)(buf1+sizeof(long));
    char **q = (char**)(buf2+1);
    *p = (char*)malloc(100);
    *q = (char*)malloc(100);

    strcpy(*p, "xxxx");
    strcpy(*q, "zzzz");

    printf("p:%s   q:%s\n", *p, *q);
    return 0;
}

我使用gcc编译代码,并像这样运行valgrind-3.6.1

valgrind --leak-check=full --log-file=test.log  --show-reachable=yes  ~/a.out 

valgrind给了我下面的日志

==20768== Memcheck, a memory error detector
==20768== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==20768== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info
==20768== Command: /home/zxin11/a.out
==20768== Parent …