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C Academy · Lesson

Common Runtime Errors

Identify and prevent segmentation faults, buffer overflows, and memory leaks.

1

Common Runtime Errors in C

Runtime errors occur when a program runs into unexpected behavior, often causing crashes.

In this lesson, you will learn:

  • How segmentation faults occur and how to fix them.
  • How buffer overflows lead to security vulnerabilities.
  • How memory leaks affect performance and how to avoid them.
Common Runtime Errors — illustration 1

2

What is a Segmentation Fault?

A segmentation fault occurs when a program tries to access memory it is not allowed to.

Causes:

  • Dereferencing an uninitialized or NULL pointer.
  • Accessing memory beyond array bounds.
  • Modifying read-only memory.

All lessons in this course

  1. Debugging with GDB
  2. Common Runtime Errors
  3. Exception Handling in C
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