The Same C++ Struct Is 24 Bytes on Linux and 12 on Windows
📰 Medium · Programming
Understand how C++ struct size varies between Linux and Windows due to padding, alignment, and LP64 vs LLP64 differences
Action Steps
- Check the size of a C++ struct on Linux using sizeof()
- Compare the size of the same struct on Windows
- Investigate the role of padding and alignment in struct size differences
- Research the implications of LP64 vs LLP64 on struct size and memory layout
- Use compiler flags or directives to control struct packing and alignment
Who Needs to Know This
Software engineers and developers working with C++ on multiple platforms will benefit from understanding these differences to optimize their code
Key Insight
💡 Struct size differences between Linux and Windows are due to padding, alignment, and LP64 vs LLP64 differences
Share This
🤔 Did you know the same C++ struct can have different sizes on Linux and Windows? 📊
Full Article
Your fields add up to 11. The other 13 bytes are padding, alignment, and the LP64 vs LLP64 split. Continue reading on Medium »
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