Linux 下 GDB 调试
<p>使用<code>gcc infile -o outfile -g</code>可以使得在进行gdb调试时查看源代码</p> <figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br></pre></td><td class="code"><pre><span class="line">gdb 可执行文件名 //进入gdb调试</span><br><span class="line">quit //退出gdb</span><br><span class="line"></span><br><span class="line">set args xxx //设置参数</span><br><span class="line">show args //获取设置参数</span><br><span class="line"></span><br><span class="line">help //获取gdb使用帮助</span><br><span class="line"></span><br><span class="line">//运行gdb程序</span><br><span class="line">start //转到程序第一行</span><br><span class="line">run //执行代码直到遇上断点</span><br><span class="line"></span><br><span class="line">//显示代码</span><br><span class="line">l/list //</span><br><span class="line">l/list 行号/函数名 //</span><br><span class="line">l/list 外部源文件:行号/函数名 //</span><br><span class="line">show list/listsize //显示使用list显示的代码行数</span><br><span class="line">set list/listsize 数字 //设置行数</span><br><span class="line"></span><br><span class="line">//断点</span><br><span class="line">b/break 行号</span><br><span class="line">b/break 函数名</span><br><span class="line">b/break 外部源文件:行号/函数名</span><br><span class="line"></span><br><span class="line">//调试</span><br><span class="line">c/continue //遇上断点时使用，至下一个断点处停</span><br><span class="line">n/next //向下执行一行代码，不会进入函数体</span><br><span class="line">s/step //向下单步调试，会进入函数体</span><br><span class="line">finish //跳出函数体</span><br><span class="line"></span><br><span class="line">//变量操作</span><br><span class="line">p/print 变量名 //打印变量值</span><br><span class="line">ptype 变量名 //打印变量类型</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">//自动变量操作</span><br><span class="line">display 变量名 //自动打印指定变量值（回车后）</span><br><span class="line">i/info display //显示display详细信息</span><br><span class="line">undisplay 编号 //删除相关编号的display</span><br><span class="line"></span><br><span class="line">//其他</span><br><span class="line">set var 变量名=变量值 //</span><br><span class="line">until //跳出循环</span><br></pre></td></tr></table></figure>…