CS270 Colorado State University

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Debugging
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Where do bugs come from?

















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9 Rules of Debugging

From "Debugging: The 9 Indispensable Rules for Finding Even the Most Elusive Software and Hardware Problems" by David Agans

1. Understand the System






2. Make it Fail






3. Quit Thinking and Look






4. Divide and Conquer








5. Change One Thing at a Time





6. Keep an Audit Trail



7. Check the Plug



8. Get a Fresh View



9. If You Didn't Fix it, it Ain't Fixed



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The Debugging Process

1) 

2) 

3) 

4) 

5) 

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Debugging Activity

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Types of bugs

Syntax Error 



Runtime Error 



Logical Error 



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Debuggers

How do they relate to the debugging process?



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gdb

Debugging runtime errors with gdb




Debugging logical errors with gdb



What to do once the error is isolated








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C--

Debugging C-- code








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MIPS

Debugging runtime errors with MIPS





Debugging logical errors with MIPS






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LC3

Debugging runtime errors in LC3




Debugging logical errors in LC3








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Last modified Nov 18 2008 by Weston Pace