eclipse c++不能 debug

eclipse c++ debug 老是出现" No symbol table is loaded.  Use the "file" command.
找到了问题：
The latest Eclipse/CDT provides a new integration of GDB called DSF-GDB. It has more features and provides more performance. My guess is that you are using DSF-GDB automatically.
解决方案：
The problem is that breakpoints don't get properly set in a dll that is not already loaded. You can try two things,
1- set the breakpoint _after_ the dll has been loaded (which is not always convenient)
2- use the old GDB integration instead (CDI). To do that, in your launch window, at the bottom, you'll find a hyperlink; click on it and use the "Standard ..... " debugger integration