How to locate the crashed code position using VS 2010 debug?

Question

0.00/5 (No votes)

See more:

I wrote a MFC application program in VS2010 IDE.I used some STL containers such as vector,map ,etc.But after ruuning my program,the program crashed.The error message said "map/set iterator not dereferencable!".So what shoud I do can find where the code caused the crash?How to locate the "bug"?Thank you very much!

What I have tried:

I had a try according to the ways fron the Internet,but I couldn't find the "bug"!!!So what should I do...

Posted 24-Jul-17 22:30pm

Mark Danniel

Updated 24-Jul-17 22:50pm

Add a Solution

Comments

Richard MacCutchan 25-Jul-17 4:49am

Look at all the places in your code where you are trying to dereference an iterator.

Mark Danniel 25-Jul-17 5:15am

Thanks for answering!

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2017-07-24T22:50:00

Solution 1

Use the debugger.
Run your app in the debugger - it's pretty simple, google will find you instructions - and when it crashes, use the stack trace to locate the function in your code that made it crash.
Put a breakpoint at the top of the function, and your your app again. This time, it will stop when it enters the function and let you take control. You can now step through the code, looking at variable contents and working out what is going on.

Sorry, but we can't do that for you: we don't have access to your code or data, and wouldn't know how to use it if we did!

Posted 24-Jul-17 22:50pm

OriginalGriff

Comments

Mark Danniel 25-Jul-17 5:08am

Thanks a lot! I'll have a try.I have a question:The debugger you mentioned previously is the VS2010 Debug mode of the IDE ?And you said "google will find you instructions" I don't understand this. Could you please explain for the detail?

OriginalGriff 25-Jul-17 5:20am

Yes.
And I mean "if you don't know how to use the debugger, Google will give you much better instructions than I can in a little text box". :laugh:

Mark Danniel 25-Jul-17 5:25am

Got it!Thanks very much! :laugh:

OriginalGriff 25-Jul-17 5:32am

You're welcome!

Mark Danniel 25-Jul-17 23:27pm

I have solved the problem with the help of you.I found the reason caused the crash.There was a map clear operation before using the map iterator,causing the iterator unavailable... So I would be much more cautious.Thanks!

OriginalGriff 26-Jul-17 2:33am

Excellent! :thumbsup: