[Cairo] Demo program ..

[Eric Christopherson]

On Tue, Sep 23, 2003 at 11:57:54AM +0200, Lars Segerlund wrote:
> 
>  Here is the last part in steppign through the program cairo-demo ... when it crashes, I just find it an interesting place to get an error.

Did you insert XSynchronize into the code*?

*As suggested by Carl Worth, Sept. 12:

Here's the traditional recipe for debugging X protocol errors:

1) Add the following call to your program, just after a successful
   XOpenDisplay, then recompile:

        XSynchronize (dpy, 1);

2) Run your program in a debugger:

        gdb a.out

3) Set a breakpoint at the _XError function:

        break _XError

4) Begin execution, (it will stop at the protocol error):

        run

5) Examine the stack to find the bug:

        info stack

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