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Why Programs Fail

A Guide to Systematic Debugging

  • 2nd Edition - June 12, 2009
  • Latest edition
  • Author: Andreas Zeller
  • Language: English

Why Programs Fail: A Guide to Systematic Debugging is proof that debugging has graduated from a black art to a systematic discipline. It demystifies one of the toughest aspects o… Read more

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Description

Why Programs Fail: A Guide to Systematic Debugging is proof that debugging has graduated from a black art to a systematic discipline. It demystifies one of the toughest aspects of software programming, showing clearly how to discover what caused software failures, and fix them with minimal muss and fuss.

The fully updated second edition includes 100+ pages of new material, including new chapters on Verifying Code, Predicting Erors, and Preventing Errors. Cutting-edge tools such as FindBUGS and AGITAR are explained, techniques from integrated environments like Jazz.net are highlighted, and all-new demos with ESC/Java and Spec#, Eclipse and Mozilla are included.

This complete and pragmatic overview of debugging is authored by Andreas Zeller, the talented researcher who developed the GNU Data Display Debugger(DDD), a tool that over 250,000 professionals use to visualize the data structures of programs while they are running. Unlike other books on debugging, Zeller's text is product agnostic, appropriate for all programming languages and skill levels.

The book explains best practices ranging from systematically tracking error reports, to observing symptoms, reproducing errors, and correcting defects. It covers a wide range of tools and techniques from hands-on observation to fully automated diagnoses, and also explores the author's innovative techniques for isolating minimal input to reproduce an error and for tracking cause and effect through a program. It even includes instructions on how to create automated debugging tools.

The text includes exercises and extensive references for further study, and a companion website with source code for all examples and additional debugging resources is available.

Key features

  • The new edition of this award-winning productivity-booster is for any developer who has ever been frustrated by elusive bugs
  • Brand new chapters demonstrate cutting-edge debugging techniques and tools, enabling readers to put the latest time-saving developments to work for them
  • Learn by doing. New exercises and detailed examples focus on emerging tools, languages and environments, including AGITAR, FindBUGS, Python and Eclipse

Readership

Computer programmers, software developers, analysts and testers

Table of contents

1 How Failures Come to Be

1.1 My Program Does Not Work!

1.2 From Defects to Failures

1.3 Lost in Time and Space

1.4 From Failures to Fixes

1.5 Automated Debugging Techniques

1.6 Bugs, Faults, or Defects?

1.7 Concepts

1.8 Tools

1.9 Further Reading

1.10 Exercises


2 Tracking Problems

2.1 Oh! All These Problems

2.2 Reporting Problems

2.3 Managing Problems

2.4 Classifying Problems

2.5 Processing Problems

2.6 Managing Problem Tracking

2.7 Requirements as Problems

2.8 Managing Duplicates

2.9 Relating Problems and Fixes

2.10 Relating Problems and Tests

2.11 Concepts

2.12 Tools

2.13 Further Reading

2.14 Exercises


3 Making Programs Fail

3.1 Testing for Debugging

3.2 Controlling the Program

3.3 Testing at the Presentation Layer

3.4 Testing at the Functionality Layer

3.5 Testing at the Unit Layer

3.6 Isolating Units

3.7 Designing for Debugging 7

3.8 Preventing Unknown Problems

3.9 Concepts

3.10 Tools

3.11 Further Reading

3.12 Exercises


4 Reproducing Problems

4.1 The First Task in Debugging

4.2 Reproducing the Problem Environment

4.3 Reproducing Program Execution

4.4 Reproducing System Interaction

4.5 Focusing on Units

4.6 Concepts

4.7 Tools

4.8 Further Reading

4.9 Exercises


5 Simplifying Problems

5.1 Simplifying the Problem

5.2 The Gecko BugAThon

5.3 Manual Simplification

5.4 Automatic Simplification

5.5 A Simplification Algorithm

5.6 Simplifying User Interaction

5.7 Random Input Simplified

5.8 Simplifying Faster

5.9 Concepts

5.10 Tools

5.11 Further Reading

5.12 Exercises


6 Scientific Debugging

6.1 How to Become a Debugging Guru

6.2 The Scientific Method

6.3 Applying the Scientific Method

6.4 Explicit Debugging

6.5 Keeping a Logbook

6.6 Debugging Quick-and-Dirty

6.7 Algorithmic Debugging

6.8 Deriving a Hypothesis

6.9 Reasoning About Programs

6.10 Concepts

6.11 Further Reading

6.12 Exercises


7 Deducing Errors

7.1 Isolating Value Origins

7.2 Understanding Control Flow

7.3 Tracking Dependences

7.4 Slicing Programs

7.5 Deducing Code Smells

7.6 Limits of Static Analysis

7.7 Concepts

7.8 Tools

7.9 Further Reading

7.10 Exercises


8 Observing Facts

8.1 Observing State

8.2 Logging Execution

8.3 Using Debuggers

8.4 Querying Events

8.5 Visualizing State

8.6 Concepts

8.7 Tools

8.8 Further Reading

8.9 Exercises


9 Tracking Origins

9.1 Reasoning Backwards

9.2 Exploring Execution History

9.3 Dynamic Slicing

9.4 Leveraging Origins

9.5 Tracking Down Infections

9.6 Concepts

9.7 Tools

9.8 Further Reading

9.9 Exercises


10 Asserting Expectations

10.1 Automating Observation

10.2 Basic Assertions

10.3 Asserting Invariants

10.4 Asserting Correctness

10.5 Assertions as Specifications

10.6 From Assertions to Verification

10.7 Reference Runs

10.8 System Assertions

10.9 Checking Production Code

10.10 Concepts

10.11 Tools

10.12 Further Reading

10.13 Exercises


11 Detecting Anomalies

11.1 Capturing Normal Behavior

11.2 Comparing Coverage

11.3 Statistical Debugging

11.4 Collecting Data in the Field

11.5 Dynamic Invariants

11.6 Invariants on the Fly

11.7 From Anomalies to Defects

11.8 Concepts

11.9 Tools

11.10 Further Reading

11.11 Exercises


12 Causes and Effects

12.1 Causes and Alternate Worlds

12.2 Verifying Causes

12.3 Causality in Practice

12.4 Finding Actual Causes

12.5 Narrowing Down Causes

12.6 A Narrowing Example

12.7 The Common Context

12.8 Causes in Debugging

12.9 Concepts

12.10 Further Reading

12.11 Exercises


13 Isolating Failure Causes

13.1 Isolating Causes Automatically

13.2 Isolating versus Simplifying

13.3 An Isolation Algorithm

13.4 Implementing Isolation

13.5 Isolating Failure-inducing Input

13.6 Isolating Failure-inducing Schedules

13.7 Isolating Failure-inducing Changes

13.8 Problems and Limitations

13.9 Concepts

13.10 Tools

13.11 Further Reading

13.12 Exercises


14 Isolating Cause-Effect Chains

14.1 Useless Causes

14.2 Capturing Program States

14.3 Comparing Program States

14.4 Isolating Relevant Program States

14.5 Isolating Cause-Effect Chains

14.6 Isolating Failure-inducing Code

14.7 Issues and Risks

14.8 Concepts

14.9 Tools

14.10 Further Reading

14.11 Exercises


15 Fixing the Defect

15.1 Locating the Defect

15.2 Focusing on the Most Likely Errors

15.3 Validating the Defect

15.4 Correcting the Defect

15.5 Workarounds

15.6 Learning from Mistakes

15.7 Concepts

15.8 Further Reading

15.9 Exercises

Appendix: Formal Definitions
A.1 Delta Debugging
A.2 Memory Graphs
A.3 Cause-Effect Chains

Review quotes

Praise from the experts for the first edition:
"In this book, Andreas Zeller does an excellent job introducing useful debugging techniques and tools invented in both academia and industry. The book is easy to read and actually very fun as well. It will not only help you discover a new perspective on debugging, but it will also teach you some fundamental static and dynamic program analysis techniques in plain language." —Miryung Kim, Software Developer, Motorola Korea

"Today every computer program written is also debugged, but debugging is not a widely studied or taught skill. Few books beyond this one present a systematic approach to finding and fixing programming errors."—James Larus, Microsoft Research

"From the author of ODD, the famous data display debugger, now comes the definitive book on debugging. Zeller's book is chock-full with advice, insight, and tools to track down defects in programs, for all levels of experience and any programming language. The book is lucidly written, explaining the principles of every technique without boring the reader with minutiae. And best of all, at the end of each chapter it tells you where to download all those fancy tools. A great book for the software professional as well as the student interested in the frontiers of automated debugging."—Walter F. Tichy, Professor, University Karlsruhe, Germany

"Andreas Zeller's Why Programs Fail lays an excellent foundation far practitioners, educators, and researchers alike. Using a disciplined approach based on the scientific method, Zeller provides deep insights, detailed approaches, and illustrative examples."—David Notkin, Professor Computer Science & Engineering, University of Washington

Product details

  • Edition: 2
  • Latest edition
  • Published: July 22, 2009
  • Language: English

About the author

AZ

Andreas Zeller

Andreas Zeller is a full professor for Software Engineering at Saarland University in Saarbruecken, Germany. His research concerns the analysis of large software systems and their development process; his students are funded by companies like Google, Microsoft, or SAP. In 2010, Zeller was inducted as Fellow of the ACM for his contributions to automated debugging and mining software archives. In 2011, he received an ERC Advanced Grant, Europe's highest and most prestigious individual research grant, for work on specification mining and test case generation. His book "Why programs fail", the "standard reference on debugging", obtained the 2006 Software Development Jolt Productivity Award.
Affiliations and expertise
Saarland University, Saarbruecken, Germany

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