All About Debugging: The Techniques

All About Debugging: The Techniques. The different ways debuggers work. For any software project, debugging is considered to be an essential yet demanding task.

For any software project, debugging is considered to be an essential yet demanding task. Developers must enter a continuous cycle of testing, debugging, and deploying to make sure their product is up to date and functioning correctly across all targeted platforms.

Usually, this is how the process goes: Once the developers finalize a program’s codebase for a product, this codebase is then sent to a tester. Testers run the codebase against well-defined input tests to check if the program gives the expected outputs. During testing, the testers observe the relationship between the input and output of the program. If one of the test cases produces the wrong results, the test reports that back to the original developers.

A program malfunction means that the codebase contains a bug, but that doesn’t give us any further information about the location of that bug. In other words, testing reveals the presenceand effects of errors — not the cause of errors. The developers must then go through a debugging process to identify the causes and fix the bugs causing them.

Although there is no fixed procedure to fix all bugs, there are several techniques that can reduce your debugging efforts. A significant (if not the entire) part of this process is spent finding the location of the bug.

In this article, we will discuss the three most known and used techniques:

• Trace-based debugging
• Spectrum-based debugging
• Delta debugging

Different techniques are better suited to different cases. There is no precise best method. It all depends on the type of codebase you’re testing and your preferences. Nevertheless, it is suitable for developers to have knowledge of and experience with all of these approaches. Sometimes, a combination of one or more of these approaches will lead you to the location of the bug.

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