How One Line of C++ Caused a Segmentation Fault Coroutines are one of the most exciting additions to modern C++. They promise cleaner async code, better readability, and fewer callback pyramids. But they also come with something very C++-like: 👉 lifetime rules you must  understand In this post, we’ll look at a tiny coroutine  that looks perfectly safe and still crashes with a segmentation fault. The Innocent Code Let’s start with a minimal example: #include <coroutine> #incl

Coroutines are powerful.They make asynchronous code readable, composable, and expressive.But they are also merciless  when it comes to lifetime mistakes. In this post, I want to walk through a real bug  that looks completely harmless at first glance — modern C++, clean abstractions, universal references — and still ends up as a data-integrity time bomb . This is not a coroutine bug.This is a fundamentals bug , made visible by coroutines. The Setup: Everything Looks Fine Imagi

When we talk about modern C++, it’s easy to focus on advanced topics: coroutines, async frameworks, schedulers, and performance tuning.But time and again, real production bugs come from something much simpler. Fundamentals. In this post, I want to show how a single line  that looks completely reasonable can introduce a use-after-free bug  in coroutine-based code and why understanding ownership and lifetimes is more important than ever in modern C++. The Code Consider the foll

or decades, developers have debated the performance differences between C and C++ . You've probably heard it all before: “C is faster...