从理论上讲，如果我们中断应用程序的执行，并右键单击调试区域的变量部分中列出的变量，我们会得到一个带有选项“Watch variableName”的上下文菜单，如果我们点击它，一个为该变量设置了观察点...但是...我总是收到这条讨厌的消息：“错误：在此帧中找不到名为'$R#'的变量”，其中＃因我尝试观察的变量而异。
我在这里做错了吗？
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My bad: I hadn't realized that in order to set a watchpoint for a variable, the execution must be stopped at the module WHERE THE VARIABLE IS DECLARED. Which makes no sense in the case of global variables, since their scope is the entire application. I stop execution at a point in another module where I'm actually using that variable, but since it's a module where it was not DECLARED, I get that weird error. So, I set a breakpoint at the very line where I declare the variable, and I'm able to set the watchpoint.
Thanks, @Rob, 'cos your question about the scope of the variable made me think about it :)
于 2019-01-09T22:58:03.773 回答