[Qt-creator] gdb command line

[Harri Pasanen]

On Wednesday, November 03, 2010 10:45:05 am André Pönitz wrote:
> On Wednesday 03 November 2010 09:13:35 ext Harri Pasanen wrote:
> > 
> > I did have some trouble deleting that breakpoint (set on open64), but
> > that might have been an underlying gdb issue?  (Qt Creator 2.0.1, gdb
> > 7.1-ubuntu, on kubuntu 10.04 amd64).   Restarting gdb fixed it.
> 
> If just 'Delete' on the item in the Breakpoint view does not work you might
> want to re-try with 2.1.0 beta or such.
> 

With 2.1.81 it seemed to delete the breakpoint ok.


> > Btw. I noticed that webkit source is not included even if I have
> > installed Qt source.
> 
> Webkit source should be included, but the Webkit module is compiled without
> debug information by default. This is intentional as it is _huge_ and
> rarely needed unless you develop Webkit yourself.

I'm indeed trying to hunt down something that looks like a Webkit bug to me.
And it does seem that the debug info from it gives gdb a mouthful.

Now that I have it compiled Qt Creator periodically popped up a message saying 
that "gdb has not responded in 20 seconds, should I wait?"  It works fine, even 
if slowly, if I let it wait, so I increased the timeout in options.  

This is on a reasonably modern machine 3GHz AMD Athlon(tm) II X4 640 
Processor, 4 Gb of memory, AMD Kubuntu 10.06-64.
Qt 4.7.1 snapshot built by yours truly, Qt Creator 2.1.81, also home-brew.
I wonder if webkit developers just resort to prints, or compile selectively 
only some parts with debug info...

Some observations:
When I have a breakpoint inside the function "static inline int 
qt_safe_open(const char *pathname, ...)" the pathname is show as a hex pointer 
only.  Is there an easy way to "cast" a pointer to null terminated string if 
this happens?

I see QUrl dumper is fixed, good!  

In trying to debug webkit I noticed that webcore.py is not Qt sources, and 
creator does not by default understand WebCore::String and other webkit types.  
I wonder if anyone has ready made dumpers for Qt Creator on these?

Time to see if I can recompile selected modules in webkit with debug info, it 
is really too slow now...


-- 
Grego
http://mpaja.com/