How do you guys debug large programs?

[mimi]

On Monday, 27 May 2013 at 19:55:57 UTC, Gary Willoughby wrote:
> This is quite an open ended question but i wondered how you 
> guys debug your D programs (i'm talking about stepping through 
> code, setting breakpoints, etc). The lack of nice IDE's with 
> integrated debuggers is worrying when working with D but up 
> until now i haven't need one.
>
> Now i've started to write much larger programs, i'm wondering 
> which debuggers do you use? Especially using Linux.

I am use Geany + gdb in Linux. A little frustrating that the 
Geany's GUI don't shows CPU registers, but .

Need to compile with this arguments for working with gdb:

dmd -unittest -gc -debug -debug=5