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Liangxu Linux
Liangxu Linux
Nov 24, 2025 · Fundamentals

Understanding Struct Alignment and Over‑Aligned Types in C/C++

This article explains the natural alignment requirements of C/C++ data types, how structs are padded and aligned based on member alignments, the hardware, cache and compiler reasons for alignment, and the concept of over‑aligned types with practical examples and usage guidelines.

CC++compiler
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Understanding Struct Alignment and Over‑Aligned Types in C/C++