valgrind内存检查

安装

apt-get install valgrind

测试程序

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

int*Test(void)
{
    int* x = malloc(10 * sizeof(int));
    delete x;// problem 1: heap block overrun, problem 2: memory leak --x not free, only first address

    return x;
}

int main(void)
{
    int count;
    Test();
    printf("i =%d/n", count); //problem 3: use uninitialised value.

    return 0;
}

内存检查命令

valgrind --tool=memcheck ./prog_name

valgrind --tool=memcheck --leak-check=yes ./prog_name
输出内存泄露的申请堆栈

valgrind --db-attach=yes --tool=memcheck ./prog_name
出错后附加gdb