[Qt-creator] possible bug in debugger

[Andre Poenitz]

On Fri, Nov 21, 2008 at 11:04:31PM -0300, Federico Altolaguirre wrote:
> Hi.When I start debuggin, the program breaks in the ntdll.dll library, in
> the funcion ntdll!DbgUiConvertStateChangeStructure. And then it crashes.
> In the application output I can see something like this "warning: HEAP: Free
> Heap block 957220 modified at 9573a0 after it was freed"
> Sorry but I don't have more info.

You probably have ;-)

Is this happening when stepping through an otherwise working program
(i.e. does the program you debug typically do what it is supposed to do,
or could the program already be in a bad state?

Does it happen immediately when starting the program in the debugger
or after you used it for a while?

Also, is  Debug -> Fast Debugger Start   selected? If so, unselect it
and look whether it makes a difference.

Does debugging a minimal application (as e.g. the one you get when 
creating a "Gui Project" using the "New Project" wizard) work?

Andre'

PS: You could also try to cut down your project to a bare minimum that still
exhibits the problem in private mial so that I can have a look directly.