Debugger crash on Dictionary visualizer

[alex_b]

Hi,

I'm not sure this is Autocad specific, but I haven't been able to find anything on the issue anywhere else.

I use this Dictionary <string, Dictionary<string, int>> to gather data from several dwg files.

The program works Ok but when I try to expand the dictionary in the VS 2008 debugger it (the debugger) invariably crashes

(after a few seconds) and Autocad exits with 'Recursion too deep; the stack overflowed' error.

The dictionary is very small, typically a few dozens of items.

Has anyone seen this before?

Thanks for your help,

alex

[fieldguy]

Your going to have to post some code, or explain what you are trying to accomplish.

>I use this Dictionary <string, Dictionary<string, int>> to gather data from several dwg files.

>The dictionary is very small, typically a few dozens of items.

This is not enough information.

[alex_b]

HI fieldguy,

As I said, the crash occurs only when the debugger tries to open the dictionary.

The program works fine. I can access the dictionary, iterate through it, etc.

I just can't open it in the visualizer.

And due to its small size, how can it cause a stack overflow?

Thanks,

alex

[fieldguy]

Have you tried a dump file?  http://msdn.microsoft.com/en-us/library/d5zhxt22(v=vs.90).aspx

If you post some code, someone can try it for confirmation.  In your 1st message, you said the debugger crashes and Autocad exits - generating the "Recursion too deep - stack overflowed error".  It should be easy to re-create.

Are you using readdwg, or are the dwg files open in the editor?

[alex_b]

Hi fieldguy,

Sorry, my bad. Something you wrote got me looking harder and surely there was a bug in the dictionary-derived class accessors, which indeed led to an infinite loop when the debugger tried to look inside the object (at least I think this is the answer, although I don't know what the debugger does exactly).

If it is of interest I could post the [bad] code.

What blinded me was the fact that the program used the class w/o any problem, it was only when the debugger looked, so I blamed the innocent debugger.

Apologies and thanks again,

alex

[fieldguy]

I'm glad you figured it out.  Your post caught my eye because I do a lot of sql - linq - datatable - datagridview stuff and use multi dimension dictionaries regularly (best thing since cheese buns).

[fieldguy]

Don't forget to mark your answer as the solution.