gdb断点调试教程

本教程基于C++语言，在Linux环境下，通过示例代码讲解gdb断点调试。
通过本教程，您将掌握Linux下如何使用gdb进行断点调试。

1、C++示例代码

1.1、C++示例源码

/*!
* Copyright (c) 2021,ZYF.
* All Rights Reserved.
*
* \file main.cpp
* \brief 
*
* \author ZYF
* \date 2021/1/27 22:49:13
* \version 1.0.0
*/
#include <stdio.h>

void Demo1()
{
   
	int nSum = 0;
	for (int i = 0; i < 10; i++)
	{
   
		nSum += i;
	}

	printf("Demo1 sum is %d\n", nSum);
}

void Demo2()
{
   
	int nSum = 0;
	for (int i = 0; i < 5; i++)
	{
   
		nSum += i;
	}

	printf("Demo2 sum is %d\n", nSum);
}

int main(void)
{
   

	Demo1();

	Demo2();

	int nSum = 0;
	for (int i = 0; i < 5; i++)
	{
   
		nSum += i;
	}

	printf("Main sum is %d\n", nSum);

	return 0;
}

1.2、编译C++示例源码

[root@bogon GCC]# gcc -g gdbDebug.cpp -o gdbDebug
[root@bogon GCC]# ./gdbDebug 
Demo1 sum is 45
Demo2 sum is 10
Main sum is 10
[root@bogon GCC]# 

1.3、调试C++示例源码

[root@bogon GCC]# gdb -q gdbDebug
Reading symbols from /GCC/gdbDebug...done.
(gdb) r
Starting program: /