Debugging & Undefined Behavior

Debugging & Undefined Behavior

Topics Covered

• GDB basics: breakpoints, stepping, inspecting variables
• Compiler sanitizers: AddressSanitizer, UndefinedBehaviorSanitizer
• Common undefined behavior categories
• Signed integer overflow
• Sequence points and unsequenced modifications
• Strict aliasing rule
• Uninitialized variables
• Writing defensive C code

Content coming soon. This module will cover debugging techniques and the concept of undefined behavior — the most important thing separating C beginners from competent C programmers. Understanding UB is essential for writing correct, portable code.